As long as you don't have crystals floating in your oil, and as long as it didn't get foggy, you are ready to inject. Even if these things did happen, it has crashed...the hormone has seperated from the oil, but it can easily be fixed. You simply would want to put it in a zip lock bag, dip it in boiling water for 15 seconds at a time, then remove from water and shake. Eventually, it will clear back up.