Barbiturates Screen
Barbiturates Screen is a laboratory test you can order directly. A barbiturates screen is a blood test that looks for barbiturates, a class of sedative medications that slow brain activity. It is ordered when a person has symptoms such as extreme drowsiness, confusion, or slowed breathing, or when a clinician needs to check exposure to these drugs.
- Sample type
- blood
- Category
- Drug & Urine Screening
- Turnaround
- 1-3 business days
- Price
- $389
- Referral
- Not required
A barbiturates screen is a blood test that looks for barbiturates, a class of sedative medications that slow brain activity. It is ordered when a person has symptoms such as extreme drowsiness, confusion, or slowed breathing, or when a clinician needs to check exposure to these drugs.
What it measures
- Barbiturates (total) — A combined measurement of barbiturate drugs present in the blood.
- Phenobarbital — A commonly prescribed barbiturate, often checked specifically.
- Secobarbital — A short-acting barbiturate that may be included in the screen.
- Pentobarbital — Another barbiturate sometimes detected by the test.
- Amobarbital — A barbiturate that may be reported as part of the total.
Who it is for
The test is typically ordered by emergency clinicians, primary care providers, or toxicology specialists. It may also be requested by pain management or addiction medicine clinicians.
Preparation
No fasting or special preparation is usually required. Tell the clinician about all medications and supplements you take, since some can affect the result.
Results and what they mean
Results are reported as a level or as detected/not detected, depending on the lab. A clinician interprets the result alongside your symptoms, history, and other tests. This is general information only and is not medical advice; discuss your results with a qualified clinician.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the barbiturates screen is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Does this test require fasting?
No. Fasting is not needed for a barbiturates screen.
How long do barbiturates stay in the blood?
It depends on the specific drug and dose, but many barbiturates can be detected for one to several days.
Can other medicines cause a false result?
Some medicines can interfere with the test. Share your full medication list with the clinician.
Is the result private?
Yes. Lab results are confidential and are shared with you and your clinician.