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Test Code TPO Ab Anti-thyroid Peroxidase

Clinical System Name

Anti Thyroid Peroxidase

Sample Requirements

Specimen: Whole blood

Container(s): Gold SST, Red, Gold Microtainer, Green/Sodium Heparatin, Lavender/EDTA

Preferred Vol: 1.0 mL

Minimum Vol: 1.0 mL


Note: Serum or plasma should be removed from separator for storage.  Specimen may be stored in same tube as Anti Thyroglublin Antibody (1.5 mL whole blood for both tests).


Processing Instructions

Reject due to:

Spin: Y

Aliquot: Y

Temp:- 20 C

Storage location: CPA freezer, Fz1 rack


Off-site collection: Spin blood.  Transfer 0.5 mL serum or plasma to aliquot container. Send frozen.


Specimen Type Temperature Time
gel separator with serum Refrigerated  
separated serum Room temp 2 h
  Refrigerated 2 d
  Frozen -20 C 4 w



STAT Performed TAT
N T, Th, Sa 2 - 4 d


Performing Laboratory

Seattle Children's Laboratory    


Department:  Chemistry

Location: Chem East

Phone Number:  (206) 987-2617




Reference Range

< 35 IU/mL


Method: Chemiluminescent immunoassay by Immulite XPI

Analytical Volume: 0.30 mL serum

Limitations: Turbidity may affect results

CPT Codes