BK/JC (Polyomavirus) Virus

Testing Indications

Testing for BK virus was discontinued by National Microbiology Laboratory (NML) on March 31, 2020. Testing of both BK/JC virus is not performed at Public Health Ontario (PHO).

Specimens for JC virus testing are referred to the NML, Winnipeg.

For more information on JC testing please visit this link.

Storage and Transport

Label the specimen container with the patient’s full name, date of collection and one other unique identifier such as the patient’s date of birth or Health Card Number. Failure to provide this information may result in rejection or testing delay.

Special Instructions

Place specimen in biohazard bag and seal.

Test Frequency and Turnaround Time (TAT)

Specimens for JC Virus testing are referred to the National Microbiology Laboratory (NML), Winnipeg. Submitter may arrange testing directly by contacting NML – Viral Exanthemata and STD Laboratory at 204-789-6024.

Turn around time is 14 days from receipt at NML.

For more information on JC testing please visit this link.

Stat Testing

STAT samples may be considered under special circumstances. Please contact the National Microbiology Lab – Viral Exanthemata and STD Laboratory at 204-789-6024 to inquire about shorter turnaround times.

JC Virus specimens are tested by quantitative multiplex PCR at NML.

Refer to this link.

Reporting

Results are reported to the ordering physician or health care provider as indicated on the requisition.