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.
Example: Based on a 30 day bill cycle and a monthly recurring charge of $30, the daily amount is $1.00 ($30/30 days = $1.00). Determine the number of prorated days. The monthly service charges begin the day service is activated. Example: Service starting on the 20th day of a cycle means there are 10 prorated days.Multiply the daily amount by the number of days being prorated. This gives you the total prorated amount. Example: $1.00 x 10 days = $10.xample: Based on a 30 day bill cycle and a monthly recurring charge of $30, the daily amount is $1.00 ($30/30 days = $1.00). Determine the number of prorated days. The monthly service charges begin the day service is activated. Example: Service starting on the 20th day of a cycle means there are 10 prorated days.