Hepatitis B test kit evaluations
Infection with the Hepatitis B virus is characterised by the appearance of certain viral markers including Hepatitis B surface Antigen (HBsAg) in the blood. It is recommended that all blood donations are tested for this marker to avoid transmission to recipients.
Laboratory diagnosis of Hepatitis B infection centres on the detection of HBsAg, as the most important means for ensuring blood safety. Positive test reactions are then confirmed by retesting with a neutralization assay.
Composition of the panel
HBsAg test kit evaluations are carried out by the WHO Collaborating Centre-Health Protection Agency, London, UK on the WHO HBsAg reference panel of stored serum/plasma specimens of geographically diverse origin, seroconversion panels and low titer panels.
A total of 18 assays to detect HBsAg have been evaluated by WHO, 13 of these were tests of simple/rapid format. Many of these tests are being produced in countries with transient economies and have not been licensed by well known regulatory authorities.
WHO performance evaluation acceptance criteria for HBsAg in vitro diagnostics in the context of WHO prequalification
External web sites
Request for Proposals
22 MARCH 2017
The Prequalification Team is publishing a request for proposals for consultancy services relating to - developing and maintaining the Quality Management Systems (QMS) and assuming the responsibility for on-going system maintenance and effectiveness of operations within the Prequalification Team.
The services required by the World Health Organization (WHO) are more fully described in the below attached Terms of Reference and Request for Proposals.
Proposals should be submitted to WHO in writing no later than 5 April 2017 at 17:00 hours Geneva time ("the closing date"), by email at the following address: email@example.com
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