Son Has Hair Follicle

Posted on Thu, 12 Nov 2020

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Thu, 12 Nov 2020 Answered on

Tue, 6 May 2025 Last reviewed on

Question : Hi...Son has hair follicle test tomorrow. Very light user. He's probably had 3 edible mj cookies in the past 6 months. He consumes small pieces of the edible which helps with his anxiety. Before that he's never tried it. Last dose was 40 days ago. Will he pass? 27 y/o, light hair, 5'7

Answered by Dr. Dr.Dorina Gurabardhi (2 hours later)

Brief Answer:
There is a chance that the he will not pass the follicle test.

Detailed Answer:
Hello,

Marijuana can be detected in the hair follicle up to 90 days.
It usually depends on many factors such as:
-Food consumption,
-Water consumption,
-F0at content
-Potency of the product that he consumed.
So, it is very difficult to detect if your son will fail at the test.
If the last dose is 40 days ago, there is a chance that the test will result positive for drug use.

Hope I have answered your query. Let me know if I can assist you further.

Kind regards!

Dr.Dorina Gurabardhi
General &Family Physician

Above answer was peer-reviewed by : Dr. Vaishalee Punj

Follow up: Dr. Dr.Dorina Gurabardhi (2 hours later)

Thank you for the reply. To help further... He's lean. 140 lbs. Drinks at least a gallon of water a day. Exercises. Estimated dose <2mg. Thank you Dr.

Answered by Dr. Dr.Dorina Gurabardhi (4 hours later)

Brief Answer:
Follow up explained below.

Detailed Answer:
Hi again dear,

It is very positive that your son drinks water and exercise.
These measures are very helpful to detox the system.
Anyway, there is a low chance that the hair follicle test results positive.
This is mainly related to the fact that he consumed the last dose 40 days ago.

Hope it helps dear.
Take care,
Dr.Dorina Gurabardhi

Above answer was peer-reviewed by : Dr. Prasad