How Long Does Weed Stay in Your Blood System?

When it comes to the duration of THC in the bloodstream, factors like body fat, metabolism, and the amount of cannabis consumed play a significant role. Generally, THC can be detected in the blood for up to 24 hours after ingestion, but this can vary widely.

cannabis blood test cutoff levels

Factors Affecting THC Detection

Testing Methods

Urine tests are the most common method for detecting THC, with results typically showing up within minutes. Blood tests are less frequent but can detect THC for a longer period, often up to 48 hours after consumption.