ARUP's Laboratory Test Directory

0070225: Thyroid Stimulating Hormone 3rd Generation

Test Mnemonic: TSH 3
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 or plasma 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: 2.000-40.000 mU/L
1-7 days: 0.400-15.000 mU/L
8-30 days: 0.400-10.000 mU/L
1 month and older: 0.300-4.000 mU/L

CPT Code(s):
84443