Triiodothyronine, Reverse : ARUP Lab Tests

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Triiodothyronine, Reverse : 0070188

Mnemonic: RT3

Methodology:	Radioimmunoassay
Performed:	Tue-Fri
Reported:	1-5 days
Specimen Required:	Collect: One 4 mL serum separator tube. Also acceptable: lavender (EDTA) or pink (K₂ EDTA). Storage/Transport Temperature: 1 mL serum or plasma, frozen. (Min: 0.3 mL) Submit specimen in an ARUP Standard Transport Tube. Stability (collection to initiation of testing): After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 3 months

Reference Interval: Birth-6 days: 600-2500 pg/mL 7 days and older: 90-350 pg/mL
Interpretive Data:	Please refer to Statement D in the Compliance Statements section in the front of the Laboratory Test Directory.
CPT Code(s):	84482
Cross References:	Reverse T3, Reverse Triiodothyronine

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