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Test
test details

FREE T3 (FREE TRI-IODOTHYRONINE)1 Observations included

MRP: ₹330

Recommended For

maleMalefemaleFemale
  • Age Group
    Age Group0-99 Years
  • Report Generation Time
    Report Generation Time
  • Sample Type
    blood sampleSerum
  • Collection At
    home visitHomelab flaskLab
Description

Normally triiodothyronine (T3) circulates tightly bound to thyroxine-binding globulin and albumin. Only 0.3% of the total T3 is unbound (free); the free fraction is the active form. In hyperthyroidism, both thyroxine (tetraiodothyronine; thyroxine: T4) and T3 levels (total and free) are usually elevated, but in a small subset of hyperthyroid patients (T3 toxicosis) only T3 is elevated. FT3 levels may be required to evaluate clinically euthyroid patients who have an altered distribution of binding proteins (eg, pregnancy, dysalbuminemia). Elevated free triiodothyronine (FT3) values are associated with thyrotoxicosis or excess thyroid hormone replacement. Ref. Value: > or =1 year: 2.8-4.4 pg/mL.

Pre-Information

No specific preparation required

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