Profile: Provalis plc develops medical diagnostic products for chronic disease management. Our Helisal® one step test is a dry chemistry immunological test, which detects antibodies to H. pylori present in freshly taken blood samples. Our Glycosal® HbA1c test offers an inexpensive way to rapidly measure HbA1c in the doctor's office. Our Glycosal® test uses well-established boron affinity chromatography to separate glycated haemoglobin from non-glycated.