Cystine is the oxidized disulfide form of cysteine (Cys) and is the predominant form of cysteine in the blood due to its greater relative stability. Cystine is derived from dietary protein and, end formed endogenously from cysteine.
Cystine may be low as a result of dietary protein insufficiency, malabsorption or impaired methionine metabolism. Supplementation of cystine along with antioxidant nutrients, Nacetylcysteine, or cofactors involved in methionine metabolism may be beneficial. Cystine and N-acetylcysteine supplementation should be avoided in the presence of intestinal yeast overgrowth and definitely contraindicated for insulin-dependent diabetics.
Understand and improve your laboratory results with our health dashboard.
Upload your lab reports and get your interpretation today.
Our technology helps to understand, combine, track, organize, and act on your medical lab test results.
– High levels might be due to excessive dietary intake or impaired cystine metabolism. Converted to cysteine (reduced cystine) via a B2 and copper-dependent step. Cystine is a major component of tissue antioxidant mechanisms.
– Suspect oxidative stress if: Significantly elevated cystine, compared to cysteine (urine only)
Interpret Your Lab Results
Upload your lab report, and we'll interpret and provide you with recommendations today.
Get Started
Monthly plan
Annual plan
Own it for life
Our exclusive data entry service is a convenient way to get your results into your private dashboard. Simply attach an image or a file of your lab test results, and one of our qualified data entry team members will add the results for you. We support all sorts of files, whether PDFs, JPGs, or Excel. This service is excellent whether you have a lot of reports to upload or are too busy to do the data entry yourself.
We strive to make the data entry process easy for you. Whether by offering dozens of templates to choose from that pre-populate the most popular laboratory panels or by giving you instant feedback on the entered values. Our data entry forms are an easy, fast, and convenient way to enter the reports yourself. There is no limit on how many lab reports you can upload.
$15 /month
billed every month
Most popular
Data entry included
$79 /year
$6.60/month billed annually
Data entry included
$250 /once
own it for life
Are You a Health Professional?
Get started with our professional plan
Welcome to Healthmatters Pro.
Save time on interpreting lab results with the largest database of biomarkers online. In-depth research on any test at your fingertips, all stored and tracked in one place. Learn more
Pro Monthly Plus
for health professionals
$75 per month
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.
1-Methylhistidine (Plasma), 3-Methylhistidine (Plasma), Alanine (Plasma), Alpha-Amino-n-butyric acid (Plasma), Alpha-Aminoadipic Acid (Plasma), Alpha-ANB/Leucine, Anserine (Plasma), Arginine (Plasma), Asparagine (Plasma), Aspartic Acid (Plasma), Beta-Alanine, Beta-Aminoisobutyric Acid (Plasma), Carnosine (Plasma), Citrulline, Cystathionine (Plasma), Cystine, Ethanolamine (Plasma), g-Aminobutyric Acid (Plasma), Glutamic Acid (Plasma), Glutamic Acid/Glutamine, Glutamine (Plasma), Glycine (Plasma), Histidine (Plasma), Homocysteine (Genova), Homocystine (Genova), Hydroxylysine (Genova), Hydroxyproline (Genova), Hydroxyproline/Proline (Genova), Isoleucine (Plasma), Leucine (Plasma), Lysine (Plasma), Methionine (Plasma), Ornithine (Genova), Phenylalanine (Plasma), Phenylalanine/Tyrosine (Genova), Phosphoethanolamine (Plasma), Phosphoserine (Plasma), Proline (Plasma), Sarcosine (Plasma), Serine (Plasma), Taurine (Plasma), Threonine (Plasma), Tryptophan (Plasma), Tryptophan/LNAA (Genova), Tyrosine (Plasma), Valine (Plasma)
