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  • Christopher D.

Can You Donate Plasma If You Smoke Marijuana? A 2023 Guide to Cannabis Use and Donating Blood

Donating blood and plasma is a selfless act that can help save lives. However, some people may be unsure if they are eligible to donate plasma if they use cannabis. In this article, we will explore the rules and regulations surrounding cannabis use and plasma donation, as well as the potential effects of cannabis on plasma donation.

We will also provide guidance on how to make informed decisions about donating plasma while using cannabis and offer alternatives to plasma donation if you are unable to donate.

The Rules and Regulations of Donation Centers

Before we dive into the effects of cannabis on plasma donation, it's important to understand the rules and regulations of blood donation centers. In the United States, the FDA sets the guidelines for blood donation eligibility.

According to the FDA, individuals who use illegal drugs are not eligible to donate blood or plasma. This includes cannabis, even if it is legal in the state where the donation is taking place.

Potential Effects of Cannabis and Plasma Donation

Although there are no direct studies on the effects of cannabis on plasma donation, there are potential factors to consider. Cannabis can cause dehydration and lower blood pressure, which can make it more difficult to find a vein for donation. Additionally, cannabis use can affect cognitive function and reaction time, which may increase the risk of fainting or passing out during the donation process.

It's important to note that some plasma donation centers may test for THC (the active ingredient in cannabis) in the blood, which could disqualify a potential donor. This is because THC can remain in the bloodstream for several days or even weeks, depending on the frequency and amount of cannabis use.

Making Informed Decisions About Donating Plasma While Using Cannabis

If you are a regular cannabis user and are considering donating plasma, it's important to make an informed decision. Here are some tips to help you decide if plasma donation is right for you:

  • Be honest with the screening staff: When you go through the screening process, be honest about your cannabis use. Lying on the screening questionnaire can put the recipient at risk and can disqualify you from donating in the future.

  • Wait until the effects wear off: If you use cannabis, wait until the effects wear off before donating plasma. This can help reduce the risk of fainting or passing out during the donation process.

  • Stay hydrated: Drinking plenty of fluids before and after donation can help prevent dehydration, which can make it harder to find a vein.

  • Consider alternative donation options: If you are unable to donate plasma, consider other ways to help, such as volunteering or making a monetary donation to a blood center.

Alternatives to Plasma Donation

If you are unable to donate plasma, there are alternative ways to help those in need. Here are some options:

  • Volunteer at a blood center: Blood centers are always in need of volunteers to help with tasks such as registration, refreshments, and post-donation monitoring.

  • Make a monetary donation: Blood centers rely on donations to purchase supplies and maintain their facilities. Consider making a monetary donation to support their efforts.

  • Encourage others to donate: Spread the word about the importance of blood and plasma donation and encourage others to donate if they are eligible.


In conclusion, donating plasma can be a lifesaving act, but it's important to understand the rules and regulations surrounding cannabis use and blood donation.

While there are potential effects of cannabis on plasma donation, being honest with the screening staff, waiting until the effects wear off, staying hydrated, and considering alternative donation options can help you make informed decisions about donating plasma while using cannabis.

Ultimately, the decision to donate plasma while using cannabis is a personal one, and it's up to each individual to weigh the potential risks and benefits. It's essential to prioritize your own health and well-being, as well as the safety of those who may receive your donated plasma.

By staying informed and following the guidelines of blood donation centers, you can help ensure that your donation is safe and effective. Remember, even if you are unable to donate plasma, there are other ways to give back to your community and help those in need.

Whether it's through volunteering, supporting local organizations, or simply spreading awareness, every effort counts. Let's work together to promote health, well-being, and compassion for all.

Get Your Medical Marijuana Card in Missouri Today!

Although marijuana is now legal recreationally in Missouri, you should still get your medical card. If you have any questions, just give us a call!

There are so many benefits to having your medical marijuana card in a recreational state, including being responsible for less in taxes, saving at dispensaries, and higher possession laws.

If you don’t already have your medical marijuana card, we can help! Our doctors are standing by to take you through a quick and easy evaluation to see if you qualify. During your evaluation, they will be happy to answer all your questions about how cannabis may be able to help with your anxiety or any other medical conditions.

(877) 303-3117 to talk to a patient support representative.


Doctors Who Care.

Relief You Can Trust.

At Missouri Marijuana Card, our mission is to help everyone achieve wellness safely and conveniently through increased access to medical marijuana. Our focus on education, inclusion, and acceptance will reduce the stigma for our patients by providing equal access to timely information and compassionate care.

Call us at (877) 303-3117, or simply book a medical marijuana evaluation to start getting the relief you can trust today!

Check out Missouri Marijuana Card’s Blog to keep up to date on the latest medical marijuana news, tips, and information.

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