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Blood test revealed temazepam 157 ng/ml and Oxazepam 63 ng/ml. Meaning?

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my blood drug test came back with the following info and I don't know what it means:
temazepam 157 ng/ml
oxazepam 63 ng/ml
Posted Thu, 6 Jun 2013 in General Health
Answered by Dr. Achuo Ascensius 2 hours later
thanks for the query

Temazepine is an obligatory prescription drug implying it must be prescribed by a registered doctor due to its severe addictive effects. Normally, it should not be detected in blood in patients who have not been prescribed the drug. It is used in treating insomnia that has resisted other drugs. It is but normal to find it in your blood since it appears you do take the drug.
Blood levels of the drug varies depending on the length of time from when the drug was ingested. Generally, when a 30mg tablet is taken, there is a plasma concentration of 260+/-210ng/ml after 9 hours and 75+/-80ng/ml after 24 hours. Your value of 157 thus will imply you took the drug less than 24 hours ago and in the abscence of a prescription, it will be considered as a drug abuse.

Similarly with Oxazepam, it should not be found in blood unless you are on it with a prescription. Pick concentrations reduce by half in about 8 hours and should be about 200ng/ml which is far above yours.

Hope this answers your query. If you have further query, i will be glad to respond.
Best regards
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