Biomarkers · Chemical
Triiodothyronine (T3)
A triiodothyronine (T3) test measures the level of T3 in a sample of your blood. It's used to help diagnose thyroid disease.
Triiodothyronine (T3) Tests, MedlinePlus, National Library of Medicine
- Primary unit
- ng/dL
- LOINC codes
- 3053-6
- Tests that measure Triiodothyronine (T3)
- Labcorp 2, Quest Diagnostics 1
Ranges
Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ
Labcorp, Triiodothyronine (T3) 002188
| Population | Interval |
|---|---|
| Age | Range (ng/dL) |
| 0 to 3 d | 96−292 |
| 4 to 30 d | 62−243 |
| 31 d to 12 m | 81−281 |
| 13 m to 5 y | 83−252 |
| 6 to 10 y | 92−219 |
| >10 y | 71−180 |
Tests
Check the catalog code, specimen, method and preparation for every test that measures Triiodothyronine (T3). Select up to five tests to compare them side by side.
Labcorp 2 tests
Single-analyte tests
Triiodothyronine (T3) 002188
Serum · Fasting not stated · Turnaround Within 1 day
Labcorp catalog pageMethod and collection
- Method
- Electrochemiluminescence immunoassay (ECLIA) This assay is performed on the Roche cobas instrument in multiple laboratories throughout Labcorp.
- Collection
- If a red-top tube or plasma is used, transfer separated serum or plasma to a plastic transport tube.
Panels that include this biomarker
Thyroid Profile II, Comprehensive 027011
5 analytes · Serum · Fasting not stated · Turnaround Within 1 day
Labcorp catalog pageMethod and collection
- Method
- See individual tests.
- Collection
- If a red-top tube is used, transfer separated serum to a plastic transport tube.
Quest Diagnostics 1 test
Single-analyte tests
T3 Total 859
Serum · Fasting not stated · Turnaround Set up: Sun-Fri; Report available: 3 days
Quest Diagnostics catalog pageMethod and collection
- Method
- Immunoassay (IA)
- Reference notes
- <1 Month Not established 1-23 Months 117-239 ng/dL 2-12 Years 105-207 ng/dL 13-20 Years 86-192 ng/dL >20 Years 76-181 ng/dL
0 of 5 tests selected
Pick one moreSources
2 tests: codes, specimens, methods, preparation and reference intervals.
Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
MedlinePlus, National Library of Medicine
The description at the top of this page.
LOINC 3053-6
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Triiodothyronine (T3)
Registered studies that measure Triiodothyronine (T3), on the U.S. National Library of Medicine registry.
Verify these ranges and sources
We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.
Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.
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