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|Test group||Thyroid tests|
|Container type||Red top|
|Amount to Collect||1 mL blood|
|Preferred volume||0.25 mL serum|
|Min. Volume||0.15 mL serum|
|Processing notes||Freeze serum, ship frozen to China Basin|
|Synonyms||Reverse T3; RT3|
|Stability||Room temperature 1 week, refrigerated 3 weeks, frozen 3 weeks|
|Turn around times||3-5 days|
|Additional information||Reverse T3 has limited application. The assay may be useful in the diagnosis of nonthyroidal illness (NTI). Patients with NTI have low T3 concentrations of rT3. RT3 may be useful in neonates to distinguish euthyroid sick syndrome from central hypothyroidism.
This test is performed using a kit that has not been cleared or approved by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics Nichols Institute. This test should not be used for diagnosis without confirmation by other medically established means.
|Last Updated||4/5/2013 1:05:02 PM|