Sticht & Kaferstein 20 estimated that the blood THC concentrationsproduced in a 70kg person smoking 15mg THC would peak at 7-8 minutes,after 30 minutes between 14-42ng/ml, and at 60 minutes between 7.5-14ng/ml.3.3 McBay 21 compared THC and THC-COOH levels in a study involving smokedmarijuana cigarettes.ticht & Kaferstein 20 estimated that the blood THC concentrationsproduced in a 70kg person smoking 15mg THC would peak at 7-8 minutes,after 30 minutes between 14-42ng/ml, and at 60 minutes between 7.5-14ng/ml.3.3 McBay 21 compared THC and THC-COOH levels in a study involving smokedmarijuana cigarettes.
1 Days in A/R: This figure represents the number of days of A/R outstanding, based on your average daily charge volume. 2  To calculate it, take your total current receivables (net of credits) divided by your practiceâs average daily charge amount.
Days in A/R refers to the average number of days it takes a practice to collect payments due. The lower the number, the faster the practice is obtaining payment, on average. Best Practice Tip. Days in A/R should stay below 50 days at minimum; however, 30 to 40 days is preferable.