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Order Code TSH Thyroid Stimulating Hormone

Additional Codes

Epic Order ID LAB129

Sub activity Type

Chemistry

Collection tube (preferred)

Green Li PST

Specimen Type

Plasma/Serum

Minimum Volume

0.6 ml

Stability

2 days at 2-8°C

24 hours at room temperature (20-22°C)

7 days at 2-8oC (Oelwein)

Transport temperature

Refrigerated

Transport Container

Plasma Separator Tube(PST) or Serum Separator tube (SST)

Rejection Criteria

Anticoagulants other than heparin

Acceptable collection tube

SST

Clinical Significance

For differential diagnosis of primary, secondary, and tertiary hypothyroidism. Also useful in screening for hyperthyroidism. This assay allows adjustment of exogenous thyroxine dosage in hypothyroid patients and in patients on suppressive thyroxine therapy for thyroid neoplasia.

Reference Range

Cedar Falls / Oelwein: 0.358 - 3.740 uIU/mL

Waterloo: 0.55 - 4.78 uIU/mL