Test Overview

Test Methodology


Test Usage

Diagnosis of suspected sulfite oxidase deficiency.

Reference Range*

Negative. A semi-quantitative result will be reported for positive specimens.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details

Days Test Performed

Monday - Friday

Analytic Time

2 days

Soft Order Code


MiChart Code

Sulfite Analysis, Urine (MMGL)



Urine Sulfite

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STAT Availability

STAT analysis must be approved by Pediatric Geneticist on Call.

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Find a Requisition

All specimens should be accompanied by a requisition.

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Specimen Requirements

Offsite Collection Instructions

Please notify MLabs Client Services Center to schedule testing prior to collecting specimen. Collect a random urine specimen and freeze within 45 minutes of collection. Frozen specimens must be received by the MMGL laboratory Monday - Thursday and within 2 days of collection. Include the patient's family history, clinical condition (asymptomatic or acute), diet, and a list of current medications with the test requisition.

Special Handing

Test requires prescheduling and special handling. See Collection Instructions.

Rejection Criteria

Urine samples not on ice and not received by laboratory within 45 minutes.


100ml Plastic Specimen Container

Normal Volume

5 mL urine

Minimum Volume

2 mL urine

Billing Information

Fee Codes

CPT Code


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