ARUP's Laboratory Test Directory

0070145: Thyroid Stimulating Hormone

Test Mnemonic: TSH
Methodology: Electrochemiluminescent Immunoassay

Performed: Sun-Sat

Reported: Within 24 hours

Specimen Required:  
Collect: One 4 mL SST or PST. Also acceptable: One 3 mL lavender (EDTA) or green (sodium or lithium heparin).

Transport: 1 mL serum or plasma at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.4 mL serum or plasma at 2-8°C.

Remarks: Allow serum to clot completely at room temperature.  Separate serum from cells ASAP.

Unacceptable Conditions: Grossly hemolyzed specimens.

Stability: After separation of cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 month

Reference Interval:
Cord Blood: 2.00-40.00 mU/L
4-30 days: 0.43-16.10 mU/L
1-24 months: 0.62-8.05 mU/L
2-6 years: 0.54-4.53 mU/L
7-11 years: 0.66-4.14 mU/L
12 years and older: 0.30-4.00 mU/L

CPT Code(s):
84443

 

 

 
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