3 mL of urine sample is the absolute minimum volume required..
1.5 mL (1500 uL) of whole blood is the absolute minimum volume required
Sample Stability and Transport Requirements:
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EDTA blood tube : same day transport at room temperature
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Plasma : Separate the EDTA plasma, refrigerate (2 - 8 0 C), and send chilled with ice packs, if testing is delayed beyond 24 hours.
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Urine sample : same day transport at room temperature. Refrigerate urine samples and send chilled with ice packs, if transport or testing is delayed beyond 24 hours.
Linear range ( EDTA Plasma ) = 1.90 - 9.00 log IU/mL
Linear range ( Urine sample ) = 2.21 - 9.30 log IU/mL
Limit of detection ( EDTA Plasma ) = 79 IU/mL
Limit of detection ( Urine sample ) = 162 IU/mL
Uncertainty of Measurement:
+/- 0.2 log IU/mL
The assay would be performed on Monday / Wednesday / Friday.
Method: Hologic BK quantitative assay (BKLD).
Effective from November 2025.
Diagnosis of current infection, reactivation and monitoring of clinical interventions.
Urgent enquiries
- In normal working hours (08:00-16:00 Mon-Fri) contact Clinical Virology via LabLINK (internal extension 22000, external number 09 307 8995).
- Outside of normal working hours (evenings and weekends) contact the On Call Clinical Microbiologist via Te Whatu Ora Te Toka Tumai Auckland main switchboard (09 367 0000).
Non-urgent enquiries
EDTA separated and plasma transported chilled