Days Set Up
Monday
Analytic Time

1 - 19 days

Soft Order Code
MMLR

Test Updated:

Synonyms

Vitamin B7
Vitamin H

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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

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Microbiological Assay

Test Usage
 
Reference Range

Age <12 yrs: 57.0 - 2,460.2 pg/mL; age >or=12 yrs: 221.0 - 3,004.0 pg/mL.

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

Specimen Requirements

Collection Onsite

Collect specimen in a red top or lavender top tube. Protect specimen from light (place in brown plastic bag or aliquot into brown tube).

Collection Offsite

Collect specimen in a red top or SST tube. Centrifuge, aliquot serum or plasma into a plastic vial and freeze. Protect specimen from light (place in brown plastic bag or aliquot into brown tube).

Yellow Top Tube
Normal Volume
2 mL serum
Minimum Volume
1 mL serum

Billing Information

CPT Code
84591
Pro Fee Code
 
LOINC
34398-8

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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.