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.
For example, a Medicare-required 14 day assessment with an ARD of day 8 (4 days early) would be paid at the default rate for the first 4 days of the payment period that begins on day 15. Assessment Reference Date: The Assessment Reference Date (ARD) is the date that signifies the end of the look back period. This date is used to base responses to all MDS coding items. OE Ã¸: Intent to establish a common temporal reference point for all staff participating in the'resident s. assessment