Advanced Diagnostic Laboratories

Collect

Plain red top or SST tube.

Specimen Preparation

Onsite [NJH]: Transport to lab within 1 hour.
Offsite: Separate serum from cells within 2 hours by centrifuge and aliquot into a labeled polypropylene or similar plastic tube.
Preferred volume: 1 mL serum

Pediatric Collection

Minimum volume: 0.3mL serum

Unacceptable Conditions

Grossly hemolyzed specimens, more than one freeze/thaw cycle

Storage Transport Temp

Offsite: Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.

Stability

Stability after cell separation:
24 hours at RT (15-25°C)
7 days hours refrigerated 2-8°C                        
6 months frozen at ≤ -10°C     

Performed

Mon-Fri

Methodology

Chemiluminescent Magnetic Immunoassay (CLIA)

Reported

4 hour routine, 1 hour STAT

Department

Core Lab

Synonyms

TSH

Related Tests

Quantiferon TB Test (QTB)

Reference Interval

All: 0.34 - 5.60 mcIU/mL

CPT Code

84443