Molly (MDMA) typically stays in the system for several days, but detection times vary depending on the type of drug test used and individual factors such as dosage, metabolism, and frequency of use. Detection windows by test type:

• Urine: Molly can be detected for about 3 to 5 days after use, with some sources noting up to 120 hours (5 days) in urine

• Blood: Detectable for approximately 1 to 3 days, generally up to 71 hours (around 3 days)

• Saliva: Detectable for up to 3 days (around 71 hours), sometimes reported as 1 to 2 days

• Hair: Molly can be detected in hair follicles for up to 90 days or even longer, depending on hair length and growth

Additional details:

• The half-life of MDMA is about 8 to 9 hours, meaning half the drug is metabolized in this time. It usually takes about 5 half-lives (roughly 35 to 45 hours) for most of the drug to clear the system, but detection can last longer depending on test sensitivity and individual factors

• Factors influencing detection time include the amount taken, metabolism, liver function, urine acidity, frequency of use, and drug purity

• While the acute effects of Molly last about 3 to 6 hours, some mental and physical effects may persist for days after use

In summary, Molly is generally detectable in urine for up to 3-5 days, in blood and saliva for up to 1-3 days, and in hair for up to 3 months or more after ingestion