Thyroid-Stimulating Hormone (TSH)
Test Code: 004259
Performing Lab: LabCorp
CPT Code: 84443 001
Synonym
Third-generation TSH; Thyrotropin; TSH
Specimen Type
Serum (preferred) or plasma
Specimen Container
Red-top tube, gel-barrier tube, OR green-top (lithium heparin) tube. Do NOT use oxalate, EDTA, or citrate plasma.
Volume
1 mL
Minimum Volume
0.7 mL (NOTE: This volume does NOT allow for repeat testing.)
Specimen Handling
If a red-top tube or plasma tube is used, transfer separated serum or plasma to a plastic transport tube.
Unacceptable Conditions
Citrate plasma specimen; improper labeling
Temperature
Room temperature
Methodology
Electrochemiluminescence Immunoassay (ECLIA). This assay is performed on the Roche cobas instrument in multiple laboratories throughout Labcorp.
Stability
Room Temperature: 14 days
Refrigerated: 14 days
Frozen: 14 days
Refrigerated: 14 days
Frozen: 14 days
| Result Code | Result Name | LOINC |
|---|---|---|
| 004264 | TSH | 11580-8 |
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