Yale New Haven Hospital

Department of Laboratory Medicine
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T3, uptake

Lab Section: 

Sendout Reference

 

Lab Location: 

Sendout

Reference Lab: 

Quest

 

Test ID: 

LAB135

 

Methodology: 

Immunoassay (IA)

Schedule: 

Daily

Reported: 

5 days

Specimen Requirements: 

Collection: 3.0 mL Blood in a Gold Top Tube.
Pediatric volume: 1 mL.
Alternative specimens: Plasma collected in: Sodium heparin (green-top) or lithium heparin (green-top) tube
Transport: Room temperature.
Stability: Room temperature: 7 days Refrigerated: 10 days Frozen: 28 days

 

Notes: 

Clinical Indications: 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.

Reference Interval: 

See patient report or consult reference laboratory website.

http://www.questdiagnostics.com/testcenter/TestDetail.action?tabName=OrderingInfo&ntc=861

CPT Code(s): 

84479

Last Changed: 

12/27/2016 02:51:53

Last Reviewed: 

12/27/2016 02:51:55