Serum and Saliva IgA testing 2019 IgA testing will be provided by Biobest Labs in 2019. The test is priced at £5.50/sample (saliva or serum). Please contact Biobest before samples are dispatched as the test is offered on the basis of prior agreement only. Samples need to be accompanied by the Submission Form. Please send samples to: Biobest Laboratories Ltd6 Charles Darw ...