How to Order a JAC2 Mutation

An EPO level on your way with your referral would be probably the most helpful because that impacts our immediate decision-making when we first see a M&R. How often does sleep apnea actually cause a secondary polycythemia? Is that a common thing? Is that uncommon? I don't know. But we certainly have it on our differential. It's very prevalent. Sometimes we've sent people for polysome neurography and have put them on CPAP without much improvement of their orthositosis. So, maybe if you started with an EPO level and then did the JAC2 later. All right. We'll try again. Oh my gosh, it's