Triiodothyronine, Total (Total T3)

0070474
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Example Reports
High
Low
Normal
Ordering Recommendation

Not recommended for routine thyroid screening.

Mnemonic
T3 TOTAL
Methodology

Quantitative Electrochemiluminescent Immunoassay

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Plasma separator tube or serum separator tube. Also acceptable: Lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin).

Specimen Preparation

Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Grossly hemolyzed specimens.

Remarks
Stability

After separation from cells: Ambient: 8 days; Refrigerated: 2 weeks; Frozen: 1 year

Reference Interval
Cord blood 14-86 ng/dL
0-3 days 96-292 ng/dL
4-30 days 62-243 ng/dL
1-23 months 81-281 ng/dL
2-6 years 83-252 ng/dL
7-11 years 92-219 ng/dL
12-19 years 83-215 ng/dL
20 years and older 80-200 ng/dL

Interpretive Data



Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

84480

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Components
Component Test Code* Component Chart Name LOINC
0070474 Triiodothyronine, Total (Total T3) 3053-6
* 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
  • T3 Total
  • Total T3
Triiodothyronine, Total (Total T3)