Return to Test Directory
BK Virus Quant (8000100043)
Test Mnemonic:


Specimen Requirements:



Plasma Pearl Top (PPT) - Blood  or Sterile Container - Urine


PPT for blood; Sterile Container for urine

Minimum Volume:

4 mL plasma or 4 mL urine


Refrigerate 2-8C up to 5 days. If there are delays, samples should be frozen (<-20C).

Specimen Preparation:

Within six hours of collection, centrifuge PPT tube at 1000g for 15 minutes. 

No specimen prep required for urine sample.


5 days

Causes for Rejection:

Incomplete and/or incorrect sample identification, insufficient sample collection, gross hemolysis, clotted samples, incorrect tube type, non-sterile or leaking containers

Reference Range:

<500 IU/mL

Turnaround Time:

Test is performed Tuesday, Thursday, and Friday.


Quantitative Real-Time Polymerase Chain Reaction




Clinical Microbiology


BK Virus; BKVIRUS; BK Viral Load

Clinical Indication:

To detect and monitor active BKV infections

Patient Preparation :

Routine venipuncture for blood. Routine urine collection.

CPT 4 Code:



This assay measures BK Virus DNA using real-time PCR. The dynamic range of the assay is 500 - 5,000,000 IU/mL. 

A result of <500 IU/mL does not rule out the presence of PCR inhibitors in the patient's specimen or that BK Virus DNA concentrations may be below the level of quantification. Care should be taken when interpreting any single viral load determination and the test is intended for use in conjunction with clinical presentation and other laboratory results. 

When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.
Return to Test Directory