Answer

No single timeline exists. Detection depends on test type, use frequency, and body chemistry.

What to Expect When Quitting Weed

Urine: 3 days for one use, 30 days for daily use. Blood: 1 to 2 days. Saliva: 1 to 3 days. Hair: 90 days.

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Urine test timeline

THC-COOH is the metabolite. It binds to fat cells. Release is slow.

cannabis detox timeline chart

Blood test timeline

THC appears in blood within minutes. It clears in 1 to 2 days. Chronic users: up to 7 days. Blood tests measure active THC, not metabolites.

THC Detox Drinks: Do They Work?

Saliva test timeline

Saliva detects THC for 1 to 3 days. After heavy use, up to 72 hours. Mouth swabs are common at workplaces.

Hair test timeline

Hair tests detect THC for 90 days. Head hair grows 0.5 inches per month. The test uses the first 1.5 inches. Body hair has a longer window.

Factors that change the timeline

What does not work

Detox drinks, niacin, vinegar, and creatine do not speed THC clearance. Drinking large amounts of water can dilute urine. Labs check creatinine levels. A diluted sample counts as a fail or requires a retest. Exercise releases stored THC into blood. This can raise urine levels before a test.

Summary

Urine: 3 to 30 days. Blood: 1 to 7 days. Saliva: 1 to 3 days. Hair: 90 days. Only time removes THC.