Triiodothyronine, Total (Total T3)

0070474
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Example Reports
Abnormal
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

Serum Separator Tube (SST). Also acceptable: Lavender (K2 EDTA or K3 EDTA), Pink (K2 EDTA), or Green (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

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
02/22/2022
X
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)