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Thyroid Stimulating Hormone
MessageTSH is the principal regulator of thyroid function, stimulating the synthesis and release of thyroid hormones thyroxing (T4) and triiodothyronine (T3).
Test Code
TSH
Alias/See Also
LAB3060029
TSH
TSH
CPT Codes
84443
Preferred Specimen
2.0 mL serum collected in a gold serum separator tube (SST)
Minimum Volume
0.5 mL serum
Other Acceptable Specimens
2.0 mL serum collected in an orange rapid clot serum separator tube (RCT)
Specimen Stability
Store centrifuged samples tightly stoppered at room temperature 15 - 30oC for no longer than eight hours. If the assay will not be completed within eight hours, refrigerate the samples at 2 - 8oC. If the assay will not be completed within 48 hours, or for shipment of samples, freeze serum at -20oC or colder.
Methodology
Immunoassay
Reference Range
| Sex | Age | Reference Range |
|---|---|---|
| M | 0 - 1 month | 0.52 - 16.0 µIU/mL |
| F | 0 - 1 month | 0.72 - 13.1 µIU/mL |
| M | 1 month - 5 years | 0.55 - 7.1 µIU/mL |
| F | 1 month - 5 years | 0.46 - 8.1 µIU/mL |
| M | 5 - 18 years | 0.37 - 6.0 µIU/mL |
| F | 5 - 18 years | 0.36 - 5.8 µIU/mL |
| M/F | 18 - 150 years | 0.45 - 5.33 µIU/mL |
Performing Laboratory
Penn Medicine Lancaster General Health
