ARUP's Laboratory Test Directory

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).

Transport:  1 mL serum or plasma, frozen. (Min: 0.3 mL)  Submit sample in an ARUP Standard Transport Tube.

Pediatric Collection/Transport:  0.2 mL serum or plasma, frozen.

Stability:  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
 
 

 

 

 
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