Test Overview

Test Methodology

Chemiluminescent Immunoassay

Test Usage

Differential diagnosis of primary hypothyroidism from secondary hypothyroidism and hyperthyroidism.

Reference Range*

0.30 - 5.50 mU/L

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Specimen may be kept at room temperature for no more than 8 hours.

Test Details

Days Test Performed

Daily, 24 hours

Analytic Time

4 hours

Soft Order Code

TSH

MiChart Code

TSH (Thyroid Stimulating Hormone)

Synonyms

Synonyms

ssTSH
Thyrotropin
TSH
TSH, 3rd Generation
TSH, Ultra Sensitive / High Sensitivity (HS-TSH)
TSH-3rd GENERATION (ssTSH)

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Laboratory

Chemical Pathology

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Specimen Requirements

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.

Container

Yellow Top Tube

Normal Volume

0.5 mL serum

Minimum Volume

0.25 mL serum

Billing Information

Fee Codes


CPT Code

84443

LOINC

11580-8

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