How is the OnDose test performed?
OnDose is a simple blood test requiring a small amount of blood (peripheral venous draw). The blood sample is collected in a supplied K2-EDTA tube. Then, a chemical stabilizer is added to the sample with a prefilled syringe and transfer device. After gently mixing, the sample is centrifuged by the clinician to obtain a 1 mL plasma sample. The plasma sample is then sent on the same day in a prepaid overnight package to Myriad Genetic Laboratories, Inc. for analysis (see full Sampling Instructions). Usually, within 7 days, results are returned through Myriad’s Results Now web-based system or via the mail to the physician’s attention. The OnDose data can be used to help optimize the patient’s dose for the next cycle of infusional 5-FU chemotherapy.
