HIV Confirmation

Which test do we use?

Geenius HIV 1/2 Confirmatory Assay (BioRad).

When a confirmation is requested, two duo-screening assays (Ag/Ab) (and HIV 1/2 antigen detection if necessary) will automatically be performed as well.

Sampling instructions

At least 1,5-2 ml serum.

Storage conditions

Serum or mother tubes should be kept in the refrigerator at (2-8°C) and sent at room temperature.

Important advice

Use the request form for a confirmation.

Make sure the samples have not been:

  • bacteriologically contaminated
  • frozen and defrosted repeatedly
  • hemolyzed

All children < 18 months of age of seropositive mothers are diagnosed by HIV DNA PCR and HIV RNA viral load, and not through HIV serology.


Guidelines for HIV diagnosis and monitoring


At least twice a week

Reference values


Delivery time of the result

maximum 5 business days


Yes (ISO 15189 – 147-MED)


Screening:                         56888-1

HIV1 confirmation:          68961-2

HIV2 confirmation:          81641-3

Antigen:                             9821-0

Laatste wijziging op: 16/01/2023