Tests
Prostate-Specific Antigen (PSA)
A protein produced by prostate tissue; elevated values can reflect prostate cancer but also common benign conditions.
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Tests
A protein produced by prostate tissue; elevated values can reflect prostate cancer but also common benign conditions.
Tests
Protein C and protein S tests use a sample of your blood to measure how many of these proteins you have and how well they're working. Though they are often done together, these are separate tests. A protein C test measures protein C in your blood ; a protein S test measures protein S.
Article
Research record from Sci Rep, 2026-05-12. PMID 42120582.
Article
Research record from Endocr J, 2026-07-08. PMID 42419972.
Indicators
A nonmetallic chemical element found in trace amounts in human body. Selenium primarily occurs in vivo as selenocompounds, mostly selenoproteins such as glutathione peroxidase and thioredoxin reductase (enzymes responsible for detoxification). Alone or in combination with Vitamin E, selenocompounds act as antioxidants. These agents scavenge free radicals; prevent blood clots by inhibiting platelet aggregation; strengthen the immune system; and have been shown, in some instances, to inhibit chromosomal damage and mutations. Exhibiting chemopreventive activity, selenocompounds also inhibit the induction of protein kinase C.
Tests
An SHBG blood test measures the level of a protein called sex hormone binding globulin (SHBG) in a sample of your blood. SHBG is made mostly in your liver. It binds (attaches) to sex hormones such as testosterone and estrogen and helps control how much of these hormones are active in your body.
Article
Research record from J Anal Toxicol, 2026-04-01. PMID 40910905.
Tests
A testosterone levels test measures the amount of the hormone testosterone in a sample of your blood. Hormones are chemical messengers in your bloodstream that control the actions of certain cells or organs.
Tests
Thyroxine is also called T4. T4 is a hormone that your thyroid gland makes. A T4 test measures the level of T4 in a sample of your blood. Too much or too little T4 may be a sign of a thyroid problem .
Article
Research record from J Mol Diagn, 2026-09-11. PMID 42727688.
Tests
A triiodothyronine (T3) test measures the level of T3 in a sample of your blood. It's used to help diagnose thyroid disease .
Tests
The determination of the amount of free and bound triiodothyronine present in a sample.