Yes...although it may not be much but it is traceable by being around it.
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Yes, secondhand exposure to marijuana smoke can result in THC being detected in the blood of non-smokers, although at lower levels compared to direct consumption. Factors such as proximity to the smoker, duration of exposure, and ventilation can affect the amount of THC absorbed.
There is no conclusive evidence to suggest that smoking marijuana directly thins your blood. However, smoking marijuana can affect your cardiovascular system in various ways, so it's important to speak with a healthcare provider if you have concerns about its effects on your health.
Smoking weed may temporarily slightly increase heart rate and dilate blood vessels, which could potentially make blood flow more quickly, but it does not inherently "thin" your blood in the same way that certain medications or medical conditions might.
A normal blood oxygen saturation level for a non-smoker is typically around 95-100%. Smoking can reduce this level by introducing carbon monoxide into the bloodstream, which competes with oxygen for binding to hemoglobin. Blood oxygen saturation is considered impaired when it falls below 90%. For further information and resources, you may refer to medical websites such as the American Lung Association or Mayo Clinic.
It's generally recommended to avoid smoking for at least 30 minutes before a blood test, as smoking can affect certain test results, such as carbon monoxide levels. However, if you're able to refrain from smoking for 3 hours prior to the test, it may be a wise choice to ensure more accurate results.
It is generally recommended to avoid smoking weed after giving blood, as it can cause dizziness or light-headedness, which may increase the risk of fainting. It's important to follow the guidelines provided by the blood donation organization to ensure your safety and well-being.