How Long Does Valium Stay in Your System?

Detection Timetable Depends on Many Variables

Man Counting Pills
Combining Valium With Other Drugs Can Be Risky. © Getty Images

Several variables factor into determining how long Valium remains in the body's system, including which kind drug test is being used. Valium (diazepam) can be detected for a shorter time with some tests but can be "visible" for up to three months in other tests.

The timetable for detecting valium in the system is also dependent upon each individual's metabolism, body mass, age, hydration level, physical activity, health conditions and other factors, making it almost impossible to determine an exact time valium will show up on a drug test.

How long the medication has been taken, how frequently and how large a dosage can also come into play in how low it is detectable by various drug tests.

The following is an estimated range of times, or detection windows, during which valium can be detected by various testing methods:

How Long Does Valium Stay in Urine?

Valium can be detected in a urine test for up to 1-6 weeks

How Long Does Valium Remain in the Blood?

Blood tests for Valium can detect the drugs for up to 6-48 hours

How Long Can Valium Be Detected in Saliva?

A saliva test can detect Valium for 1-10 days

How Long Does Valium Remain in Hair?

Valium, like many other drugs, can be detected with a hair follicle drug test for up to 90 days.

Prevent Severe Valium Side-Effects

Valium is prescribed for a variety of purposes including to relieve anxiety, muscle spasms, and seizures and to manage alcohol withdrawal symptoms.

Serious side-effects of Valium can be avoided by knowing how long in remains in the system so that the medication is not repeated too quickly.

If you experience any of the following symptoms, call your healthcare provider or 9-1-1 immediately:

The Risk of Addiction

Another reason to know how long Valium remains in your system is the fact that it can be habit-forming.

It should not be taken for a longer period of time, or in larger dosages, or more often than for which it is prescribed.

After taking Valium for a period of time, you can develop a tolerance for the drug, making it less effective than when you initially began to take it. You may be tempted to take larger dosages to achieve the same effect that you once had, but to do so can increase your risk of becoming addicted.

Other Dangers of Taking Valium

Valium can have serious or even life-threatening side effects if taken in combination with other drugs, especially if taken with sedatives, sleeping aids, or tranquilizers.

Serious breathing problems can develop if Valium is taken in combination with drinking alcohol.


Always Test Clean. "What Are Drug Detection Times?" Drug Test Facts Accessed December 2015

American Association for Clinical Chemistry "Drugs of Abuse Testing." Lab Tests Online. Revised 2 January 2013.

LabCorp, Inc. "Drugs of Abuse Reference Guide." Accessed March 2013.

OHS Health & Safety Services. "How long do drugs stay in your system?." Accessed March 2013.

National Institue on Drug Abuse. "Diazepam." Drugs, Herbs and Supplements October 2010

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