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

2011793
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Example Reports
High
Normal
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.
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)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.

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



No compliance statements are in use for this test.

Note
Hotline History
N/A
CPT Codes

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 click the sidebar link to access the Interface Map.
Aliases
  • Triiodothyronine, Free (FT3)
Triiodothyronine (T3), Free by Equilibrium Dialysis/LC-MS/MS

Esoterix Endocrinology