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Time Sensitive
Ordering Recommendation

Detect and quantify BK virus in blood or urine.

Mnemonic
BK QNT
Methodology

Quantitative Real-Time Polymerase Chain Reaction

Performed

Sun-Sat

Reported

1-3 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Lavender (EDTA), pink (K2EDTA) or serum separator tube OR urine.

Specimen Preparation

Transport 1 mL whole blood, serum, plasma or urine in a sterile container. (Min: 0.5 mL).

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Heparinized specimens.

Remarks

Specimen source required.

Stability

Ambient: 24 hours; Refrigerated: 72 hours; Frozen: 1 month

Reference Interval

Not detected

Interpretive Data

The quantitative range of this assay is 2.6-8.6 log copies/mL (390-390,000,000 copies/mL).

A negative result (less than 2.6 log copies/mL or less than 390 copies/mL) does not rule out the presence of PCR inhibitors in the patient specimen or BK virus DNA concentrations below the level of detection of the assay.  Inhibition may also lead to underestimation of viral quantitation.

No international standard is currently available for calibration of this assay. Caution should be taken when interpreting results generated by different assay methodologies.

Compliance Category

Analyte Specific Reagent (ASR)

Note

The limit of quantification for this DNA assay is 2.6 log copies/mL (390 copies/mL). If the assay DID NOT DETECT the virus, the test result will be reported as "< 2.6 log copies/mL (< 390 copies/mL)." If the assay DETECTED the presence of the virus but was not able to accurately quantify the number of copies, the test result will be reported as "Not Quantified."

Hotline History
N/A
CPT Codes

87799

Components
Component Test Code* Component Chart Name LOINC
0090059 BK Virus DNA, Quantitation 43201-3
0093241 BK Virus DNA, Quant Interp 47251-4
0096366 BK Virus DNA, Quant Source 31208-2
2002302 BK Virus DNA, Quant copy/mL 48309-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • BK (Polyoma) Virus
  • BK Virus Quant PCR
  • BK Virus, Molecular Detection
  • BKV DNA
  • Viral load monitoring
BK Virus, Quantitative PCR