Polycythemia can result from internal problems with the production of red blood cells. This is termed primary polycythemia. If polycythemia is caused due to another underlying medical problem, it is referred to as secondary polycythemia.
PMS can last 1-2 weeks. Premenstrual syndrome (PMS) is characterized by a number of symptoms related to a womanâs menstrual cycle. They occur a week or two before monthly menstruation begins, and ordinarily, they disappear at that time.
Once opened, Levemir pens and vials last a little longer than average (up to 42 days) and cloudy insulins pens, such as Novolog 70/30 and Humalog 75/25, last for a shorter time (up to 14 days). The package insert that comes with your insulin specifies how long it remains good once it is opened, or you can ask your local pharmacist.