Profile: AMS Reference Lab is a regional clinical reference laboratory serving physicians, clinics, hospitals and government. We perform urine drug screening. Our positive drug screens are confirmed by GC/MS, long recognized as the method of choice for confirmations. Our extensive courier network coupled to our electronic IT systems gives superior service to hospital laboratories. We now offer a standardized urine test that monitors a patient's response to aspirin therapy. The test measures a platelet specific metabolite of Thromboxane A2. A suppressed result on the AspirinWorks test (<1,500) indicates when a patient responds to the current aspirin dose. A result greater than 1,500 indicates lack of or decreased response. Results are reported out in pictograms per milligram creatinine, so that the test can be performed on a single urine specimen.