U.S. doctors online nowAsk doctors free
A female asked:

In a spinal tap - say, prior to beginning a new treatment for multiple sclerosis - will cocaine from past use be detected? if so, for how long?

3 doctor answers5 doctors weighed in
Dr. Stephen Scholand
Infectious Disease 23 years experience
Cocaine detection: CSF is not routinely checked for cocaine. Usually doctors perform a urine test -that can extend back to 2 days if it was a 'one time' use. For chronic cocaine users though, it could be longer. So there are Qs such as how long you’ve been using, the average amount used each time, if you have any liver problems, and the type of test used. Generally docs are non-judgemental so hope you can go forward
Dr. Linda Gromko
Family Medicine 48 years experience
Talk to your doctor: This is certainly not in my area of expertise. Generally, drug testing is done with urine or blood. I am concerned that you may be worried about some past behaviors - probably needlessly. It would be sad if this worry delayed your getting treated appropriately for your current condition. Have a frank discussion with your doctor. Start with "this is awkward for me to ask, but..." Good luck!
Dr. Al Hegab
Dr. Al Hegab commented
Allergy and Immunology 40 years experience
excellent answer Dr Gromko
Nov 1, 2017
Dr. John Chiu
Allergy and Immunology 57 years experience
How much "past": If you have not used cocaine for days, it will not show up in any blood test.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Nov 1, 2017
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.