Triiodothyronine, Reverse : ARUP Lab Tests

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Triiodothyronine, Reverse : 0070188

Mnemonic: RT3

Methodology:	Quantitative Radioimmunoassay
Performed:	Mon-Sun
Reported:	1-3 days
Specimen Required:	Collect: Serum separator tube. Also acceptable: Lavender (EDTA) or pink (K₂EDTA). Specimen Preparation: Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL) Storage/Transport Temperature: Frozen. 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:	Refer to Statement D under Testing Information at http://www.aruplab.com.
CPT Code(s):	84482
Cross References:	Reverse T3 (Triiodothyronine, Reverse), Reverse Triiodothyronine (Triiodothyronine, Reverse)

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