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.
The basic formula to calculate it is very simple and works great if your average cycle length is 28 days. Simply add 280 days (or 40 weeks) to the first day of your last period. If you know when conception happened then just add 266 days (or 38 weeks). However, things can get complicated if your cycle length is not 28 days or if your luteal phase length is not 14 days. The above tool makes it easy to adjust for these sorts of shift by letting you specify your information.