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- A procedure in which a sample of blood is examined to measure the amounts of certain substances made in the body. An abnormal amount of a substance can be a sign of disease in the organ or tissue that produces it.
National Cancer Institute - Cite This Source - This Definition
- beta-2-microglobulin, CA 19-9 assay, discharge, Dysfunction, kidney function test, liver function test, ovulation, oxidative stress, oxygen saturation test, prostate-specific antigen test, PSA bounce, renal function test, serum tumor marker test, venous sampling