17 OHP tests are also run at Smith-Kline lab in King of Prussia, PA. This test is run on MONDAYS, WEDNESDAYS, AND FRIDAYS. So if you have the blood drawn on a Monday at a drawing center, it arrives at the lab Monday evening. It is run on Wednesday and results are avaible on Thursday afternoon. If they want to double check the results, they run it again on Friday and results are avaible on Monday.