Do hair follical tests show the exact date you did weed or just around the time you did it?

Im just curious. My ex has done weed and coke. Im gonna have him take a hair follical test if he even thinks he's getting any visitation w/ my 4 yr. old son. So, does a follical tet show the exact date you did it or just around the time?

Do hair follical tests show the exact date you did weed or just around the time you did it?

Only that the hair contains traces of drugs. If he thinks it is coming up, he can just shave his head, a la "Britney Spears"%26gt;

Do hair follical tests show the exact date you did weed or just around the time you did it?

They can use hair from anywheres on his body(although no wheres near as realiable as the hair on his head) and if he shaves his head and dosent normally that will make the judge pretty suspicious. I am going through the same thing with my ex and they told me that it would show anything done in the last 6 months but I'm not sure if it will give you an exact date.Witnesses also work.

good luck and dont give up if he is doing drugs your son is not safe around him. At the most he should have supervised visitation.