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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Carboxylase Enzyme Screen


CPT Code(s): 82658

Testing Site: Testing will be sent to an approved reference laboratory.

Turnaround Time: Routine: 7 - 14 days.

Specimen Requirements

Specimen: Blood

Collection Instructions: This test intended for pediatric biochemical genetics patients only.  If questions, contact Biochemical Genetics Lab at (608)262-6386 or (800)862-1013.

Blood must be sent by overnight courier to arrive at the performing laboratory within 24 hours of draw time.  Blood must be received in UWHC Client Services Lab (B4/220) by 1200 Monday-Wednesday.

A normal control tube from a non-related person must be submitted with patient sample.  There is no charge for the control tube.

Collection Container: Preferred: Yellow top(with ACD-A/B anticoagulant)

Collection Volume: Preferred: 9 mL
Pediatrics: 3 mL

Sample Analyzed: Whole Blood

Stability: Ambient: 24 hours
Refrigerated: Not acceptable
Frozen: Not acceptable


Interpretation provided with results.  Submit clinical history to assure appropriate interpretation of results.


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