Days Set Up
Analytic Time

8 hours

MiChart Code
Porphyrin Screen, Urine
Soft Order Code

Test Updated:


Porphyrin Screen

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology


Test Usage

Diagnosis of porphyrias, lead poisoning.

Reference Range


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

Specimen Requirements

Collection Offsite

Collect 24 hour urine specimen. Add 5 grams of Sodium Carbonate (1 gram for pediatric patients) to container prior to start of collection; do not use Sodium Bicarbonate. Aliquot 50 mL into a plastic urine container and refrigerate. Protect specimen from light. Record total 24 hour urine volume and collection dates/times on request form. Random urine also acceptable; random urine collection does not require preservative.

Normal Volume
50 mL aliquot of 24 hour urine collection or 20 mL aliquot of random urine collection.
Minimum Volume
30 mL aliquot of 24 hour urine collection or 20 mL aliquot of random urine collection.

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.