Decreased: Pregnancy, estrogens, hyperproteinemia, acute intermittent porphyria.
Increased: Androgens, hyperproteinemia, stress, acute liver disease.
This assay is a measure of available thyroid hormone binding sites and should be interpreted with thyroxine levels.
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- Fasting Required: NO
- Preferred Specimen: Serum
- Reference Range(s): 22-35 %
- Turnaround Time: 3 Days
- Test Code: 861