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Tests
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 .
Tests
The determination of the amount of free metanephrine present in a sample.
Tests
The determination of the amount of free normetanephrine present in a sample.
Tests
The determination of the amount of free proprotein convertase subtilisin/kexin type 9 present in a sample.
Tests
The determination of the amount of free prostate specific antigen in a biological sample.
Tests
The determination of the ratio of the biological activity of free protein S in a subject's specimen when compared to the same activity in a control specimen. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the ratio of free prostate specific antigen as compared to the total prostate specific antigen present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the amount of free tau protein present in a sample.
Tests
The determination of the amount of free testosterone present in a sample.
Tests
The determination of the ratio of free testosterone compared to total testosterone present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the amount of free thyroxine present in a sample.
Tests
The determination of the amount of free tissue factor pathway inhibitor in a sample.
