Differential diagnosis of primary hypothyroidism from secondary hypothyroidism and hyperthyroidism.
0.30 - 5.50 mU/L
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen may be kept at room temperature for no more than 8 hours.
Days Test Performed
Daily, 24 hours
Soft Order Code
TSH (Thyroid Stimulating Hormone)
TSH, 3rd Generation
TSH, Ultra Sensitive / High Sensitivity (HS-TSH)
TSH-3rd GENERATION (ssTSH)
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Offsite Collection Instructions
Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate up to 48 hours or freeze for longer storage.
0.5 mL serum
0.25 mL serum