Triiodothyronine (T3), Free by Equilibrium Dialysis/LC-MS/MS

2011793

Ordering Recommendation

Mnemonic

T3 FREE SP

Methodology

Quantitative Equilibrium Dialysis/High Performance Liquid Chromatography-Tandem Mass Spectrometry

Performed

Varies

Reported

8-14 days

New York DOH Approval Status

This test is New York DOH approved.

Submit With Order

ARUP Consult®

Disease Topics

Specimen Required

Patient Preparation
Collect: Plain red or lavender (K2EDTA). Also acceptable: Serum separator tube, lavender (K3EDTA), pink (K2EDTA), or Green (Sodium Heparin).
Specimen Preparation: Separate from cells ASAP or within 45 minutes of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL)
Storage/Transport Temperature: Frozen. Also acceptable: Refrigerated or Room Temperature.
Unacceptable Conditions
Remarks
Stability: Ambient: 5 days; Refrigerated: 5 days; Frozen: 10 weeks

Reference Interval

By report

Interpretive Data

Note

Hotline History

N/A

CPT Code(s)

84481

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Components

Component Test Code*	Component Chart Name	LOINC
2011794	Free Triiodothyronine, Dialysis/LC-MS/MS

* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please view this test within the Laboratory Test Directory found at www.aruplab.com

Aliases

Triiodothyronine, Free (FT3)

Performed at Esoterix Endocrinology