Methamphetamine (meth) can be detected in the blood for a relatively short period compared to other testing methods. Specifically, meth is typically detectable in blood tests for about 1 to 3 days (24 to 72 hours) after the last use. Most sources indicate a detection window of approximately 24 to 48 hours, with some variation depending on individual factors and testing sensitivity

Key Points on Meth Detection in Blood:

• Meth can be detected in blood within 1-2 hours after ingestion.
• The detection window in blood generally lasts from 1 up to 3 days after the last dose.
• The half-life of meth in the body ranges roughly from 6 to 15 hours, meaning it takes about 2-3 days for meth to reduce to negligible levels in blood.
• Factors such as dosage, frequency of use, metabolism, liver and kidney function, age, body mass, and overall health influence how long meth stays detectable in blood

Comparison with Other Tests:

• Urine tests can detect meth for about 3 to 7 days after use, sometimes longer in heavy or chronic users.
• Saliva tests detect meth for about 1 to 4 days.
• Hair follicle tests can detect meth for up to 90 days, providing a longer detection window

In summary, for blood work specifically, methamphetamine is usually detectable for up to 1-3 days following last use, with the typical range being around 24 to 48 hours depending on individual and test factors