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Thyroid Stimulating Hormone (TSH)
Ordering Recommendation
Preferred test for initial screening and monitoring of thyroid function.
Methodology
Quantitative Electrochemiluminescent Immunoassay (ECLIA)
Performed
Mon-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 SST
Specimen Preparation:
Separate serum or plasma from cells ASAP or within 2 hours of collection. Allow serum specimen to clot completely at room temperature.
Storage/Transport Temperature:
Refrigerated.
Unacceptable Conditions:
Grossly hemolyzed specimens.
Remarks:
Stability:
After separation from cells: Ambient: Calcium and CO2: 4 hours, All others: 24 hours; Refrigerated: 1 week; Frozen: 2 weeks
Reference Interval
Components
Available Separately
Reference Interval
Interpretive Data
Note
CPT Code
84443
Components
Component Test Code
Component Chart Name
LOINC
0070145
Thyroid Stimulating Hormone
3016-3
Aliases
Thyrotropin
TSH
TSH, Pregnancy
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