The IgG Babesia test measures antibodies against Babesia species, a group of parasites transmitted by ticks that can cause babesiosis, a malaria-like illness. Babesia microti is the most common species in North America, while Babesia divergens and others are more frequently found in Europe and Asia.
What IgG Babesia Means
-
IgG antibodies typically develop several weeks after infection and may remain detectable for months or years, even after treatment.
-
A positive IgG result usually indicates past exposure or immune memory, not necessarily an active infection.
-
IgM antibodies are more reflective of recent or acute babesiosis, while IgG testing provides a view of longer-term immune response.
Clinical Importance
Testing for IgG Babesia can be helpful in patients who have:
-
Unexplained fevers, sweats, or chills that resemble malaria-like illness
-
Fatigue, anemia, or low platelets, which can result from parasite activity in red blood cells
-
A history of tick exposure, particularly in areas where Lyme disease and babesiosis often occur together (co-infections are common)
-
Persistent or recurrent symptoms after suspected tick-borne infection
Patient Takeaway
A positive IgG Babesia result means your immune system has previously recognized the parasite, suggesting prior exposure or infection. Since IgG can remain long after illness, this test does not always mean the infection is still active.
Your healthcare provider will interpret the result alongside your symptoms, clinical history, and other tests (such as IgM, PCR, or blood smear) to confirm whether babesiosis is present.
If the result is equivocal (borderline), antibody levels are close to the cutoff and not clearly positive or negative. In this case, repeat or confirmatory testing is often recommended.
Lab Results Explained and Tracked
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
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
Personal plans
$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.
$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
- 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
See Your Health Timeline
Understand What Your Results Mean
Visualize Your Results
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
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.