So you found out that you are going to have to submit to a drug test.  Most of the time if you are going to have to submit a sample it would be urine or saliva.  Some more sensitive jobs or court ordered tests would require submitting a hair sample.  Blood tests are not the most commonly used method of substance testing because they are more expensive, and more intrusive than the other drug tests. However, blood tests are the most accurate type of drug test.

Barbiturates can be detected in the blood for one to two days for a single ingestion and much longer for chronic users.  Your age, body weight, metabolic rate and even the type of barbiturate may increase the detection time of barbiturates in the urine.  Barbiturates are highly addictive and can become habit forming.  There can be severe withdrawal symptom associated with barbiturate addiction and should be taken exactly as they are prescribed to you with regard to dosage and length of time you are supposed to take them.  If the prescription does not appear to be working for you then consult your physician.  Do not attempt to alter the prescription yourself either by increasing the frequency or dosage levels.  This can be a fatal mistake.

If you are prescribed barbiturates and are required to take a blood test either for pre-employment testing, court ordered testing, accident related blood testing or for insurance purposes, it is wise to disclose your prescriptions to the testing facility before you submit your sample.