Yes my husband had the JAK2 test after his platelets were in the 800's. And JAK2 TEST came back positive medium deterioration. Dr said he had jak2 ET. Dr started Hydrea 500 mg once a day. And set up a bone marrow biopsy. After months we got biopsy. Dr said Joe my husband, is polycythemia Vera because RBC are too high. RBC is getting too thick. So did a phlebotomy that day. Took 1 pint blood out and saline back in. And to do ever 2 weeks and take Hydrea twice a day. Then check bloodwork a day before next Phlebotomy. So my Joe instead of taking Hydrea twice a day to them all at once in the morning and relized that wasn't good it messed him up. So now takes one in morning and one in evening. But the evening makes him very tired and goofy. But it's getting a little better maybe. So waiting for next bloodwork to see how he is doing. Last bloodwork was platelets down to 673 and RBC were 52.7%. Thank you for your comments

Yes it was positive medium Deterioration. Joe my husband was on Hydrea but his legs started to get weak and painful to point he had no balance and had to crawl around by hanging on to furniture or railings. So they stop hydrea over month ago. Now he is walking again but still laying in bed most of the time except for walking the dog or maybe little yard work. Then back to bed. His platelet numbers went down from 700-800 to 450. He had two phlebotomies and they were stopped red cells are low. But now they want to try new medicine a Jak2 inhibitor med. In a week or so. Just not sure about anything. His calcium levels were high so they did some kind of IV treatment and is come down some. That did chest ct scan no lung cancer found. Now checking the parathyroid or pituitary gland see if there's something going on there waiting for ultrasound. I just wished and he wishes he had some more energy back somehow. So we are just waiting for new meds and any new findings. Thanks