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A free light chains test measures the level of free light chains in your blood. Light chains are proteins made by plasma cells, a type of white blood cell. Light chains usually link up with other proteins called heavy chains. Together, the light and heavy chains make immunoglobulins, also called antibodies. Antibodies are proteins that your immune system makes to fight germs such as viruses and bacteria .
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A blood test done near the end of the first trimester of pregnancy to screen for common chromosomal defects. This test screens for blood levels of both free beta-human chorionic gonadotrophin (beta-hCG) and pregnancy-associated plasma protein A (PAPP-A) and can detect trisomies of chromosomes 21 (Down's syndrome), chromosome 18 (Edward's syndrome), and chromosome 13 (Patau's syndrome).
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The determination of the amount of free choline, glycerophosphorylcholine, and phosphorylcholine present in a sample.
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The determination of the amount of free choriogonadotropin beta present in a sample.
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The determination of the free complement C2 present in a sample.
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The determination of the amount of free complement C5 present in a sample.
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The determination of the amount of free epidermal growth factor receptor present in a sample.
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The determination of the amount of free erythrocyte protoporphyrin present in a sample.
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The determination of the amount of free estradiol present in a sample.
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The determination of the ratio of free estradiol compared to total estradiol present in a sample. The measurement may be expressed as a ratio or percentage.
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The determination of the amount of free hemoglobin present in a sample.
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The determination of the amount of free Immunoglobulin E in a sample.
For professionals