Confirmation Cutoff Levels and Methods Urine Screening Methodology In order to determine if a urine specimen is negative or positive for drugs of abuse, all specimens are initially screened by an enzyme immunoassay (EIA) procedure.
On average, 2 people can finish a full bottle of wine in  2.5 hours. A 750 ml (0.75 L) bottle of wine is 25.36 oz. If you drink a bottle of wine a week for your entire adult life you will consume about 2,970 bottles of wine.
Assume 1 glass of wine per hour per guest. Each 750ml bottle has ~5 glasses. So for 100 guests and a 4 hour wedding reception, the calculation would be: 100 guests x 4 hours x 1 glass/hour = 400 glasses. 400 glasses / 5 glasses per bottle = 80 bottles of wine. 80/2 = 40 bottles of white and 40 bottles of red.