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Pathology Clinical Services

Department of Pathology

THIOCYANATE, serum (087-0531)

CPT 4 Code: 84430

Test Order Mnemonic: THIOCYN

Lab: Clinical Chemistry

Request Form: Special Chemistry Form 2

Collection: Routine venipuncture. Collect sample immediately before the next dose.

Storage Instructions: Store at room temperature or 2-8°C. Centrifuge the specimen to separate the serum from the red cells within 4 hours of collection.

Causes for Rejection: Blood collected in a SST/gel separator tube

Availability: Samples are received 24 hours per day at Sample Management, Room 5.136 McCullough.

Turnaround Time: Routine: 24 hours; STAT: 2 hours

Special Instructions: Results needed after 5 pm require approval of the director or pathology resident on call.

Specimen: Blood

Volume: 3 mL blood

Minimum Volume: 0.5 mL serum

Container: Red-topped tube. Do not use SST/serum separator tube.

Reference Ranges: Therapeutic Range: 50-100 mcg/mL

Critical Values: Potential Toxicity: > 100 mcg/mL

Test Method: Colorimetric

Reviewed/revised April 2007 by P. Harris

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