Days Set Up
Monday - Saturday
Analytic Time

8 hours

MiChart Code
BK Virus DNA, Quantitative, Plasma
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.

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Test Overview

Test Methodology

Polymerase Chain Reaction (PCR)

Test Usage

The QBKV assay is intended to measure BK viral load in patient plasma.

Reference Range

Not detected.
Reportable Range: Log10 2.1 (126 copies/mL) to Log10 7.8 (62,800,000 copies/mL)
Virus that is detectable at levels above or below the reportable range will be reported but not quantified.

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

Specimen Requirements

Collection Offsite

Collect specimen in a 6 ml lavender top (EDTA) tube. Centrifuge for 20 minutes at 800-1600 xg at room temperature and aliquot plasma into a polypropylene plastic vial within 24 hours of collection. Refrigerate plasma at 2-8 C for up to 5 days or freeze at -70 C for up to 2 weeks. Do not allow frozen specimens to thaw at any time during storage or transport, due to possible degradation of the viral load. Microbiology molecular testing requires a dedicated sample, and cannot be shared with other laboratories.

Normal Volume
4 mL whole blood or 2 mL EDTA plasma
Minimum Volume
2 mL whole blood or 1 mL EDTA plasma

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.