No special preparation is needed for HLA B22. Inform your doctor if you are on any medications or have any underlying medical conditions or allergies before undergoing HLA B22. Your doctor depending on your condition will give specific instructions.
HLA B22 is done using PCR method on a Blood sample.
The normal result for HLA B22 for HLA B22 antigen is Normally negative for Unisex gender and for All age groups.