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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Why Does Clonazepam Not Showing Up In The Drug Analysis?

my husband is on clonazepam and has been for 9 years. His last two blood tests showed no residue of the medication in his system. Why? I saw another person who said klonadine does not show up in their system. This is odd but some how occuring in my husband. why?
Thu, 27 Nov 2014
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General & Family Physician 's  Response
Hello
Clonazepam is sedative drug and this is MIDAZOLAM type benzodiazepines .
This is extremely rapid absorbed and peak in 20 minutes .
Elimination of all drugs within 5-6 hours .
If tested after 8-10 hours drugs analyst will not find this drug in blood and urine However in elderly person it take longer time for elimination.
Good luck.
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Why Does Clonazepam Not Showing Up In The Drug Analysis?

Hello Clonazepam is sedative drug and this is MIDAZOLAM type benzodiazepines . This is extremely rapid absorbed and peak in 20 minutes . Elimination of all drugs within 5-6 hours . If tested after 8-10 hours drugs analyst will not find this drug in blood and urine However in elderly person it take longer time for elimination. Good luck.