February 2016

Change in reporting positive TPPA results

Feb
05

The  NVRL has introduced a change in the way positive Treponema pallidum particle Agglutination (TPPA) results are reported. Previously, samples generating a positive TPPA result were reported as TPPA Positive ≥1/80 however from February 2016, the specific titre of the results up to and including TPPA positive 1:10240 will be reported. Samples which are reactive above this level will be reported as TPPA positive ≥1:20480.

Reporting results in this manner will provide more information when diagnosing a new/acute infection or documenting waning maternal antibody in infants.

Posted By Brian O'Grady read more

Zika virus testing available at NVRL

Feb
03

We are currently using a commercially available PCR assay to perform RNA testing on serum, plasma, and urine samples from symptomatic individuals, with the appropriate travel history, who are within 14 days of onset of symptoms. In the coming weeks, assuming the clinical need persists, it is intended that we will also introduce a second (laboratory developed) PCR assay to facilitate local confirmatory testing. In the interim, we will issue preliminary reports, whilst also referring samples to the Rare & Imported Pathogens Laboratory, Public Health England, for confirmation.

Posted By Brian O'Grady read more