Thank you so much for waiting. This would depend on several factors, mainly how high of a dose would be in your system and also how long between the parties. Here are the general guidelines:
Cocaine drug tests generally use a cut-off of 300 ng/mL to indicate positive use. Very low concentrations of cocaine may be detected in urine during the initial few hours after use. In general, cocaine metabolites like benzoylecgonine can be detected in urine 2–4 days after use for sporadic users and up to 12 days after use for chronic users or following a binge.
Still, another factor in the detection of cocaine in the system is mode of administration and dosage. For example, an intravenous dose of 20 mg cocaine can be detected for 1.5 days while street doses of cocaine (administered via different routes) can be detectable up to 1 week. Extremely high doses of cocaine can be found in the system up to 3 weeks after last use.
So in general, in most people who use once in a while, it would be safe to test after 72 hours, although it does depend on your metabolism. If they do a hair follicle test, that would be positive for approximately 3 months.
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