Days Set Up
Monday - Saturday
Analytic Time

2 - 5 days

MiChart Code
BK Virus DNA, Urine
Soft Order Code

Test Updated:



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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

Polymerase Chain Reaction (PCR)

Test Usage

Detection or quantitation of BK virus DNA. Used for monitoring nephropathy in transplant patients; determining BK virus reactivation disease in bone marrow and renal transplant patients.

Reference Range

A 1/2 to 1 log (5-10 fold) change in viral load is considered clinically significant. Urine titers are 4-6 logs higher than blood titers.

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

Specimen Requirements


CSF: send 2 mL in sterile tube; freeze. Tissue: Send moistened with saline, in sterile cup; freeze.

100ml Plastic Specimen Container
Normal Volume
2.0 mL CSF; 5 mg fresh tissue
Minimum Volume
0.5 mL CSF; 5 mg fresh tissue

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.