Two reflex test options are available for Myeloproliferative Neoplasm testing. When ordered as a reflex panel, if PV is suspected, Patients in whom JAK2 V617F mutations are not detected will automatically reflex to the JAK2 Exon 12 testing. If ETor PMF are suspected, patients in whom JAK2 V617F mutations are not detected will automatically undergo CALR testing. If CALR mutations are not detected, they will automatically reflex to MPL Exon 10 mutation analysis.