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Test Code RT3 Triiodothyronine, Reverse by Tandem Mass Spectrometry

Clinical Indications

Generally not recommended for routine evaluation of thyroid disorders, although may be considered in pregnant women.

Additional Test Codes

Epic Order Name: T3 (TRIIODOTHYRONINE) REVERSE (aka RT3)
Sunquest Order Code: RT3
Epic Px Code: LAB2474

Specimen Collection Type

Preferred: Gold
Acceptable: Red, lavender (EDTA)

Minimum Collection Volume

1.0 mL

Reference Range

Age

Reference Interval

0 -17 years

Not established

18 years and older

9.0 - 27.0 ng/dl

Critical Value

N/A

Interpretation

N/A

Rejection Criteria

Grossly hemolyzed specimens

Specimen Availability for Add-on Testing

1 Day

Specimen Stability

Frozen (preferred): 3 months
Refrigerated: 1 week
Ambient: 24 hours

Day(s) Performed

Sun-Sat

Performing Lab- Department

TUKHS-BH-Mail Outs

CPT Code

84482

LOINC Code

3052-8

Test Alias

Reverse T3
Reverse T3, Serum
Reverse Triiodothyronine
RT3

Additional Information / Notes

N/A