What is the neutrophil-to-lymphocyte ratio (NLR)?

NLR is a simple inflammation marker calculated by dividing the absolute neutrophil count by the absolute lymphocyte count from a CBC with differential. It measures the balance between two key immune cell types that often shift in opposite directions during illness, stress, or inflammation. A higher NLR reflects more neutrophil activity relative to lymphocytes — associated with systemic inflammation, infection, cardiovascular disease, and other stress states.

What is a normal NLR?

In most healthy adults, NLR falls between approximately 1 and 3. Values above 3–4 are considered elevated in many clinical studies, though there is no universal reference range. Some published research describes a broader healthy adult range of approximately 0.78–3.53. Because NLR is a calculated ratio with no standardised reference interval, always interpret it alongside your absolute neutrophil and lymphocyte counts, other inflammatory markers, and clinical context.

What does a high NLR mean?

A high NLR means neutrophils are elevated relative to lymphocytes — a pattern associated with systemic inflammation, bacterial infection, physiological stress, cardiovascular disease, chronic inflammatory conditions, corticosteroid use, and obesity. A single mildly elevated NLR is nonspecific and common. Persistent elevation over multiple tests, especially alongside other abnormal inflammatory markers, warrants clinical evaluation.

What does a low NLR mean?

A low NLR means lymphocytes are high relative to neutrophils. This is often seen during viral infection (when lymphocytes rise), as normal individual variation, or when neutrophils are low (neutropenia). A mildly low NLR with a normal CBC and no symptoms is usually not clinically significant. Check the absolute neutrophil count — if it is below the normal range, that is the more important finding.

Is a high NLR a sign of cancer?

Not necessarily. NLR is a nonspecific inflammation marker elevated by many common conditions including infection, stress, cardiovascular disease, and corticosteroid use. However, elevated NLR has been studied as a prognostic marker in several cancer types — generally associated with worse outcomes when persistently and markedly elevated alongside other abnormal findings. A single elevated NLR does not diagnose or indicate cancer. It should be interpreted with the full CBC, symptoms, and other findings.

What is the NLR and Alzheimer's disease connection?

Recent large-scale research has found that elevated NLR is independently associated with increased risk of Alzheimer's disease and related dementias. A 2026 study from NYU Langone and the VA (n=370,000+) found elevated NLR predicted future dementia risk before cognitive symptoms appeared. A 2025 UK Biobank study (n=250,000+) confirmed the association. Importantly, Mendelian randomization has not confirmed causality — NLR appears to be a biomarker reflecting neuroinflammatory processes associated with dementia risk, not a proven causal factor. A high NLR does not diagnose Alzheimer's disease.

What causes NLR to go up temporarily?

Temporary NLR elevation is common and usually benign. Common causes include acute illness or infection, vigorous exercise, physical or psychological stress, poor sleep, corticosteroid medications, and dehydration. These typically resolve without treatment. A single elevated NLR after illness or a stressful period is not clinically significant.

Can I calculate my own NLR?

Yes — NLR = absolute neutrophil count ÷ absolute lymphocyte count. Both values appear on a standard CBC with differential. For example: neutrophils 4.2 ×10³/µL ÷ lymphocytes 1.6 ×10³/µL = NLR of 2.6. You can calculate and enter it manually in HealthMatters to track it over time alongside your other CBC markers.

How does NLR differ from CRP and ESR?

CRP (C-reactive protein) and ESR (erythrocyte sedimentation rate) are direct measures of acute phase proteins released during inflammation. NLR is a calculated immune cell ratio that reflects the balance of immune activation. All three can rise during inflammation, but they reflect different biological pathways. NLR is derived from a standard CBC — no additional test is needed. CRP and ESR require separate blood samples and tests. NLR may detect low-grade chronic inflammation that CRP and ESR miss at normal levels.

Neutrophil-to-Lymphocyte Ratio (NLR): Normal Range & What It Means

Blood

Other names: Neutrophil-to-Lymphocyte Ratio, Neutrophil to Lymphocyte Ratio, NLR, N/L Ratio, Neutrophil/Lymphocyte Ratio, Neut/Lymph Ratio, Neutrophil Lymphocyte Ratio, NLR Blood Test, NLR CBC, NLR Inflammation Marker, Systemic Immune-Inflammation Index (related), Neutrophil Lymphocyte Index, Ratio Neutrophiles Lymphocytes (French), Relación Neutrófilo Linfocito (Spanish)

Optimal Result: 1 - 3 Ratio.

White Blood Cell Differential Test

From Healthmatters.io Team and reviewed by HM Editorial Team

Written on May 20, 2026 | Last updated Updated on May 20, 2026

Lab Results Explained and Tracked

QUICK ANSWER

NLR (neutrophil-to-lymphocyte ratio) is a simple inflammation marker calculated from your CBC. It measures the balance between neutrophils and lymphocytes — two key immune cell types that often move in opposite directions during illness, stress, or inflammation.

A typical NLR in healthy adults is between 1 and 3. Values above 3–4 may indicate elevated inflammation or physiologic stress. No single NLR value is diagnostic — it is always interpreted with your full CBC, symptoms, and clinical history.

MOST COMMON RESULTS AT A GLANCE

Your NLR	What it usually means
< 1	Low — evaluate absolute neutrophil and lymphocyte counts
1–3	Normal range in most healthy adults
3–4	Mildly elevated — common with stress, mild inflammation, or infection
4–6	Moderately elevated — evaluate with CRP, ESR, and clinical context
> 6	Significantly elevated — warrants clinical evaluation
> 10	Markedly elevated — seen in severe sepsis, critical illness, or acute events

There is no universal reference range for NLR. Values above 3 are considered elevated in many adult clinical studies, but context determines significance.

HOW NLR IS CALCULATED

NLR = Absolute Neutrophil Count ÷ Absolute Lymphocyte Count

Both values come from the CBC with differential — a standard blood test. You can calculate NLR yourself by dividing your absolute neutrophil count by your absolute lymphocyte count — both values appear on any standard CBC with differential.

Example: Neutrophils absolute 4.5 ×10³/µL ÷ Lymphocytes absolute 1.8 ×10³/µL = NLR of 2.5 (normal range)

Why the ratio matters: Neutrophils and lymphocytes often shift in opposite directions during inflammation or stress — neutrophils rise while lymphocytes fall. The ratio amplifies this signal, making it more sensitive than either value alone for detecting systemic immune imbalance.

WHAT NLR MEASURES: THE BIOLOGY

Neutrophils are the most abundant white blood cells in healthy adults. They are the first responders of the immune system — rapidly mobilising to sites of infection, injury, or tissue damage. They are part of the innate immune system.

Lymphocytes — including T cells, B cells, and NK cells — orchestrate the adaptive immune response, providing targeted defence against specific pathogens, regulating immune activity, and producing antibodies.

In a balanced immune state: Both are within normal range and the ratio is 1–3.

Under stress or inflammation: Neutrophils rise (driven by cortisol, adrenaline, and inflammatory cytokines), lymphocytes often fall (redistributed to tissues or suppressed by stress hormones), and NLR rises — sometimes substantially.

This physiological seesaw makes NLR a sensitive early signal of systemic immune activation, even when the absolute counts themselves may appear only mildly abnormal.

NLR AND ALZHEIMER'S DISEASE RISK

Recent large-scale research has identified elevated NLR as a significant predictor of Alzheimer's disease and related dementias — one of the most clinically compelling emerging findings for this marker.

The NYU Langone / VA study (2026): A study published in Alzheimer's & Dementia analysed electronic health records from NYU Langone (n=284,530) and the Veterans Health Administration (n=85,836). The researchers found that higher NLR was independently and positively associated with future risk of Alzheimer's disease and related dementias. Notably, elevated NLR appeared before any signs of cognitive impairment — suggesting it may reflect early neuroinflammatory processes in disease development.

The UNC / UK Biobank study (2025): A separate analysis of UK Biobank (n=207,100) and the All of Us program (n=45,202) found NLR was significantly associated with Alzheimer's disease (pooled HR: 1.03 per 1 SD, 95% CI: 1.02–1.05), with effects robust to adjustment for CRP, APOE ε4 status, and other AD risk factors.

Important nuance: Mendelian randomization analyses have not confirmed NLR as a causal factor in Alzheimer's — the evidence supports NLR as a biomarker of neuroinflammatory processes associated with AD risk, not as a proven cause. A high NLR does not diagnose Alzheimer's disease or predict it with certainty.

What this means practically: Tracking NLR over time alongside other inflammatory and cognitive health markers may provide a useful early signal worth discussing with a physician — particularly in older adults with other cardiovascular risk factors, which share overlapping neuroinflammatory pathways with dementia risk.

HIGH NLR: WHAT IT MEANS

An elevated NLR — generally above 3 in adults — reflects a shift toward increased neutrophil activity relative to lymphocytes. This pattern is associated with a wide range of conditions and physiological states.

Common causes of elevated NLR:

Bacterial infection or sepsis (often >10 in severe sepsis)
Acute illness or fever
Physiological stress (surgery, trauma, intense exercise)
Chronic inflammatory conditions (rheumatoid arthritis, IBD)
Cardiovascular disease and metabolic syndrome
Obesity and insulin resistance
Smoking
Corticosteroid therapy (steroids raise neutrophils and suppress lymphocytes)
Cancer (elevated NLR is associated with poorer prognosis in several cancer types)
Psychological stress and poor sleep (modest elevation)

What a single mildly elevated NLR means: A result of 3–5 in an otherwise normal CBC with no symptoms is common and nonspecific. It does not diagnose any particular condition. Repeat testing and clinical context are needed before any conclusions are drawn.

When elevated NLR is more clinically significant: A persistently elevated NLR (above 4–5) over multiple tests, especially alongside elevated CRP, ESR, or other CBC abnormalities, warrants evaluation for chronic inflammation, cardiovascular risk, or an underlying inflammatory condition.

LOW NLR: WHAT IT MEANS

A low NLR — typically below 1 — means lymphocytes are high relative to neutrophils, or neutrophils are low relative to lymphocytes.

Common causes of low NLR:

Active or recent viral infection (lymphocytes rise during viral immune response)
Relative lymphocytosis (elevated lymphocyte count from any cause)
Neutropenia (low neutrophil count)
Some autoimmune conditions
Medication effects
Normal individual variation

Is low NLR concerning? A mildly low NLR in an otherwise normal CBC is usually not clinically significant. The most important next step is to check the absolute neutrophil count — if it is below normal (neutropenia), that is the primary clinical concern, not the ratio itself.

NLR AND CARDIOVASCULAR DISEASE

NLR has been studied as a cardiovascular risk marker across a large body of research. Elevated NLR is associated with:

Higher risk of myocardial infarction and adverse cardiac events
Worse outcomes after acute coronary syndrome
Increased risk of stroke
Progression of atherosclerosis

The mechanistic link is systemic inflammation — elevated NLR reflects chronic immune activation that accelerates vascular damage. NLR is not a substitute for established cardiovascular risk markers (LDL, CRP, blood pressure), but may add independent prognostic information in high-risk patients.

WHAT LEVEL OF NLR IS CONCERNING?

No single NLR value is universally dangerous. Clinical significance depends on context, trends, and accompanying findings.

NLR range	Typical clinical context
1–3	Normal in most healthy adults
3–5	Mild elevation — common with stress, infection, or inflammation
5–10	Moderate elevation — evaluate underlying cause; correlate with CRP and full CBC
> 10	Marked elevation — associated with severe infection, sepsis, acute events, or critical illness

Trends matter more than single values. A rising NLR over time — even within the 3–5 range — may be more meaningful than a single elevated reading. HealthMatters plots NLR over time so you can track changes alongside your other CBC markers.

COMMON PHRASES SEEN ON LAB REPORTS

NLR is a calculated marker and does not appear as a named field on most standard CBC reports. It must be calculated from:

NEUTROPHILS (ABSOLUTE) / ANC / NEUT # / AUTO NEUTROPHILS
÷
LYMPHOCYTES (ABSOLUTE) / LYMPHS # / AUTO LYMPHOCYTES / ABS LYMPHOCYTES

Some specialised panels, research reports, or functional medicine labs may report NLR directly as:

NLR NEUTROPHIL/LYMPHOCYTE RATIO N/L RATIO NEUT:LYMPH RATIO SYSTEMIC INFLAMMATION INDEX (related but different calculation)

You can enter NLR manually in HealthMatters by dividing your absolute neutrophil count by your absolute lymphocyte count from your CBC with differential.

FAQ about Neutrophil-to-Lymphocyte Ratio

What is the neutrophil-to-lymphocyte ratio (NLR)?

NLR is a simple inflammation marker calculated by dividing the absolute neutrophil count by the absolute lymphocyte count from a CBC with differential. It measures the balance between two key immune cell types that often shift in opposite directions during illness, stress, or inflammation. A higher NLR reflects more neutrophil activity relative to lymphocytes — associated with systemic inflammation, infection, cardiovascular disease, and other stress states.
What is a normal NLR?

In most healthy adults, NLR falls between approximately 1 and 3. Values above 3–4 are considered elevated in many clinical studies, though there is no universal reference range. Some published research describes a broader healthy adult range of approximately 0.78–3.53. Because NLR is a calculated ratio with no standardised reference interval, always interpret it alongside your absolute neutrophil and lymphocyte counts, other inflammatory markers, and clinical context.
What does a high NLR mean?

A high NLR means neutrophils are elevated relative to lymphocytes — a pattern associated with systemic inflammation, bacterial infection, physiological stress, cardiovascular disease, chronic inflammatory conditions, corticosteroid use, and obesity. A single mildly elevated NLR is nonspecific and common. Persistent elevation over multiple tests, especially alongside other abnormal inflammatory markers, warrants clinical evaluation.
What does a low NLR mean?

A low NLR means lymphocytes are high relative to neutrophils. This is often seen during viral infection (when lymphocytes rise), as normal individual variation, or when neutrophils are low (neutropenia). A mildly low NLR with a normal CBC and no symptoms is usually not clinically significant. Check the absolute neutrophil count — if it is below the normal range, that is the more important finding.
Is a high NLR a sign of cancer?

Not necessarily. NLR is a nonspecific inflammation marker elevated by many common conditions including infection, stress, cardiovascular disease, and corticosteroid use. However, elevated NLR has been studied as a prognostic marker in several cancer types — generally associated with worse outcomes when persistently and markedly elevated alongside other abnormal findings. A single elevated NLR does not diagnose or indicate cancer. It should be interpreted with the full CBC, symptoms, and other findings.
What is the NLR and Alzheimer's disease connection?

Recent large-scale research has found that elevated NLR is independently associated with increased risk of Alzheimer's disease and related dementias. A 2026 study from NYU Langone and the VA (n=370,000+) found elevated NLR predicted future dementia risk before cognitive symptoms appeared. A 2025 UK Biobank study (n=250,000+) confirmed the association. Importantly, Mendelian randomization has not confirmed causality — NLR appears to be a biomarker reflecting neuroinflammatory processes associated with dementia risk, not a proven causal factor. A high NLR does not diagnose Alzheimer's disease.
What causes NLR to go up temporarily?

Temporary NLR elevation is common and usually benign. Common causes include acute illness or infection, vigorous exercise, physical or psychological stress, poor sleep, corticosteroid medications, and dehydration. These typically resolve without treatment. A single elevated NLR after illness or a stressful period is not clinically significant.
Can I calculate my own NLR?

Yes — NLR = absolute neutrophil count ÷ absolute lymphocyte count. Both values appear on a standard CBC with differential. For example: neutrophils 4.2 ×10³/µL ÷ lymphocytes 1.6 ×10³/µL = NLR of 2.6. You can calculate and enter it manually in HealthMatters to track it over time alongside your other CBC markers.
How does NLR differ from CRP and ESR?

CRP (C-reactive protein) and ESR (erythrocyte sedimentation rate) are direct measures of acute phase proteins released during inflammation. NLR is a calculated immune cell ratio that reflects the balance of immune activation. All three can rise during inflammation, but they reflect different biological pathways. NLR is derived from a standard CBC — no additional test is needed. CRP and ESR require separate blood samples and tests. NLR may detect low-grade chronic inflammation that CRP and ESR miss at normal levels.

Lab Results Explained and Tracked

All Your Lab Results.
One Simple Dashboard.

What does it mean if your Neutrophil-to-Lymphocyte Ratio result is too high?

An elevated NLR means neutrophils are high relative to lymphocytes — a pattern reflecting systemic inflammation, physiological stress, or immune activation.

Most common causes: Bacterial infection, acute illness, surgery or trauma, chronic inflammatory disease, cardiovascular disease, obesity, smoking, corticosteroid use, and psychological stress.

A mildly elevated NLR (3–5) in an otherwise normal CBC is common and nonspecific. It does not diagnose a specific condition. Repeat testing and clinical context determine whether follow-up is needed.

Persistently elevated NLR (above 5) alongside other abnormal inflammatory markers, CBC changes, or symptoms warrants evaluation for chronic inflammation, cardiovascular risk, or an underlying condition.

Emerging research: Recent large-scale studies have associated elevated NLR with increased risk of Alzheimer's disease and related dementias — appearing before cognitive symptoms develop. This does not mean a high NLR predicts Alzheimer's disease — it is one of many systemic inflammation signals that may reflect early neuroinflammatory processes.

Related Health Conditions

All Your Lab Results.
One Simple Dashboard.

Import, Track, and Share Your Lab Results Easily

Import, Track, and Share Your Lab Results

Import lab results from multiple providers, track changes over time, customize your reference ranges, and get clear explanations for each result. Everything is stored securely, exportable in one organized file, and shareable with your doctor—or anyone you choose.

Cancel or upgrade anytime

What does it mean if your Neutrophil-to-Lymphocyte Ratio result is too low?

A low NLR means lymphocytes are high relative to neutrophils, or neutrophils are low.

In most cases, a mildly low NLR in an otherwise normal CBC is not clinically significant. It is most commonly seen during or after viral illness (when lymphocytes are transiently elevated), or as normal individual variation.

The most important check with a low NLR is the absolute neutrophil count. If the ANC is below normal range (neutropenia), that is the primary clinical concern — not the ratio. Isolated low NLR with normal absolute counts and no symptoms typically does not require follow-up.

Related Biomarkers

Article Review & Sources

All our content is backed by peer-reviewed studies, academic research, and trusted medical sources. We're committed to accuracy and transparency — see our editorial policy for details.

Laboratories

Bring All Your Lab Results Together — In One Place

We accept reports from any lab, so you can easily collect and organize all your health information in one secure spot.

Pricing Table

Gather Your Lab History — and Finally Make Sense of It

Finally, Your Lab Results Organized and Clear

Choose the plan that fits you — and turn scattered lab reports into clear insights you can finally use.

Pick a plan that fits you — and turn scattered lab reports into clarity.

Personal plans

Professional plan

$79/ year

Advanced Plan

Access your lab reports, explanations, and tracking tools.

Import lab results from any provider
Track all results with visual tools
Customize your reference ranges
Export your full lab history anytime
Share results securely with anyone
Receive 5 reports entered for you
Cancel or upgrade anytime

$250/ once

Unlimited Account

Pay once, access everything—no monthly fees, no limits.

Import lab results from any provider
Track all results with visual tools
Customize your reference ranges
Export your full lab history anytime
Share results securely with anyone
Receive 10 reports entered for you
No subscriptions. No extra fees.

Professional plan

$45/ month

Pro Monthly

Designed for professionals managing their clients' lab reports

Import lab results from any provider
Track lab results for multiple clients
Customize reference ranges per client
Export lab histories and reports
Share results and reports with clients
Invite clients to their accounts
Begin with first report entered by us
Cancel or upgrade anytime

About membership

What's included in a Healthmatters membership

Import Lab Results from Any Source

Easily upload lab results from any provider, whether it's a hospital, independent lab, or home testing service. We support PDFs, scanned documents, and JPEGs from patient portals. No need to log in to multiple platforms — everything is centralized in one secure space.

Easily upload lab results from any provider — we support PDFs, scans, and images. Keep all your reports organized in one secure place.

See Your Health Timeline

Every lab result is automatically organized on a chronological timeline, giving you a complete picture of your health journey. Whether you're tracking a condition, managing treatments, or staying proactive, the timeline helps you and your doctor understand how things progress over time.

Every lab result is automatically organized on a chronological timeline, giving you a complete picture of your health journey.

Understand What Your Results Mean

Whether it's a blood test, GI panel, urinalysis, or something else, lab reports measure numerous biomarkers that reveal what's happening inside your body. Our extensive database covers over 10,000 biomarkers, providing clear, simple explanations of what each result means and how you can take action—no matter your membership level. Say goodbye to confusion and get the insights you need to better understand your health.

Our database covers over 10,000 biomarkers with clear, simple explanations—so you can finally understand your results and what to do next.

Enter Your Lab Reports Yourself — Always Free Enter Your Lab Reports — Always Free

If you'd like to handle inputting your health data into your account, you can do so with our easy-to-use data entry forms. Our user-friendly form is designed to guide you through the quick and easy submission process, making it simple to keep track of your health metrics. This is available to both Advanced plan and Unlimited plan members.

Our user-friendly form guides you through a quick, simple submission process, making it easy to enter your health metrics.

Add your results anytime with our easy entry form. It's quick, guided, and helps you stay organized — free for all members.

Visualize Your Results

View your lab data through easy-to-read graphs and tables. Quickly spot patterns, track changes, and compare results across different dates — all without digging through multiple reports. You can also select and compare graphs of specific biomarkers side-by-side to better understand how they relate and change over time.

See your lab reports in clear graphs and tables. Spot patterns, track changes, and compare results over time — all in one place.

Export Your Complete Lab History in a Single File Export Your Complete Lab History

After collecting lab results from different providers, you can download your entire history combined into a single file. Choose from PDF, Excel, or CSV formats to easily review, share, or get a second opinion—no more juggling multiple reports.

After collecting lab results from different providers, you can download your entire history combined into a single file.

Comprehensive Data Entry Service for Your Reports Data Entry Service for Your Reports

Our inclusive service handles the data entry for your lab reports. Just submit your information and we'll take care of the rest. Advanced plan members receive five reports entered for free, then $15 per report after that. Unlimited plan members receive ten report entries for free, then $15 per report after that.

Our inclusive service handles the data entry for your lab reports. Just submit your information and we'll take care of the rest.

Securely Share With Anyone You Trust

Whether you're working with a doctor, nutritionist, caregiver, or wellness coach, you can securely share your complete lab history by sending an invite link to anyone you trust. You have full control over who sees your information and for how long, ensuring your privacy and peace of mind at every step.

Share your full lab history with your doctor, nutritionist, or coach using a secure invite link.

Discover

Let Your Lab Results Tell the Full Story

Once your results are in one place, see the bigger picture — track trends over time, compare data side by side, export your full history, and share securely with anyone you trust.

Bring all your results together to compare, track progress, export your history, and share securely.

I have been using Healthmatters.io since 2021. I travel all over the world and use different doctors and health facilities. This site has allowed me to consolidate all my various test results over 14 years in one place. And every doctor that I show this to has been impressed. Because with any health professional I talk to, I can pull up historical results in seconds. It is invaluable. Even going back to the same doctor, they usually do not have the historical results from their facility in a graph format. That has been very helpful.

Anthony

Unlimited Plan Member since 2021

What fantastic service and great, easy-to-follow layouts! I love your website; it makes it so helpful to see patterns in my health data. It's truly a pleasure to use. I only wish the NHS was as organized and quick as Healthmatters.io. You've set a new standard for health tracking!

Karin

Advanced Plan Member since 2020

As a PRO member and medical practitioner, Healthmatters.io has been an invaluable tool for tracking my clients' data. The layout is intuitive, making it easy to monitor trends and spot patterns over time. The ability to customize reports and charts helps me present information clearly to my clients, improving communication and outcomes. It's streamlined my workflow, saving me time and providing insights at a glance. Highly recommended for any practitioner looking for a comprehensive and user-friendly solution to track patient labs!

Paul

Healthmatters Pro Member since 2024

We implement proven measures to keep your data safe.

At HealthMatters, we're committed to maintaining the security and confidentiality of your personal information. We've put industry-leading security standards in place to help protect against the loss, misuse, or alteration of the information under our control. We use procedural, physical, and electronic security methods designed to prevent unauthorized people from getting access to this information. Our internal code of conduct adds additional privacy protection. All data is backed up multiple times a day and encrypted using SSL certificates. See our Privacy Policy for more details.

Neutrophil-to-Lymphocyte Ratio (NLR): Normal Range & What It Means

QUICK ANSWER

MOST COMMON RESULTS AT A GLANCE

HOW NLR IS CALCULATED

WHAT NLR MEASURES: THE BIOLOGY

NLR AND ALZHEIMER'S DISEASE RISK

HIGH NLR: WHAT IT MEANS

LOW NLR: WHAT IT MEANS

NLR AND CARDIOVASCULAR DISEASE

WHAT LEVEL OF NLR IS CONCERNING?

COMMON PHRASES SEEN ON LAB REPORTS

FAQ about Neutrophil-to-Lymphocyte Ratio

What is the neutrophil-to-lymphocyte ratio (NLR)?

What is a normal NLR?

What does a high NLR mean?

What does a low NLR mean?

Is a high NLR a sign of cancer?

What is the NLR and Alzheimer's disease connection?

What causes NLR to go up temporarily?

Can I calculate my own NLR?

How does NLR differ from CRP and ESR?

All Your Lab Results. One Simple Dashboard.

What does it mean if your Neutrophil-to-Lymphocyte Ratio result is too high?

Related Health Conditions

All Your Lab Results. One Simple Dashboard.

Import, Track, and Share Your Lab Results Easily

Import, Track, and Share Your Lab Results

What does it mean if your Neutrophil-to-Lymphocyte Ratio result is too low?

Related Biomarkers

Article Review & Sources

Bring All Your Lab Results Together — In One Place

Gather Your Lab History — and Finally Make Sense of It

Finally, Your Lab Results Organized and Clear

Advanced Plan

Unlimited Account

Pro Monthly

What's included in a Healthmatters membership

Import Lab Results from Any Source

See Your Health Timeline

Understand What Your Results Mean

Enter Your Lab Reports Yourself — Always Free Enter Your Lab Reports — Always Free

Visualize Your Results

Export Your Complete Lab History in a Single File Export Your Complete Lab History

Comprehensive Data Entry Service for Your Reports Data Entry Service for Your Reports

Securely Share With Anyone You Trust

Let Your Lab Results Tell the Full Story

Once your results are in one place, see the bigger picture — track trends over time, compare data side by side, export your full history, and share securely with anyone you trust.

Bring all your results together to compare, track progress, export your history, and share securely.

What Healthmatters Members Are Saying

Use promo code to save 10% off any plan.

We implement proven measures to keep your data safe.

All Your Lab Results.
One Simple Dashboard.

All Your Lab Results.
One Simple Dashboard.