Barbitalspecql
This test detects the presence of barbital, a barbiturate medication, in your blood sample.
{"Barbital is a barbiturate drug used as a sedative or anticonvulsant","The test checks if barbital is present in your serum/blood","It helps monitor drug levels for therapeutic use or detect overdose","Results are reported as 'Present' or 'Not Detected'","Sample is collected via blood draw"}
Key facts at a glance
- LOINC
- 32051-5
- Short code
- BARB
- Synonyms
- Barbital Spec Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top serum collection tube (no anticoagulant); transport tube for toxicology specimens
- Units
- N/A
- Critical range
- — – 10 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- Gas chromatography-mass spectrometry (GC-MS) or immunoassay screening with confirmation by GC-MS
- CPT
- 80104
- SNOMED
- 105206003
- Specimen volume
- 3-5 mL of whole blood yielding at least 1-2 mL of serum
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-20°C): 30 days
- Hemolysis max
- 100
- Lipemia max
- 100
- Icterus max
- 50
- TAT
- 24–72 hours
- Order
- routine
What is this test?
The Barbital test is a qualitative analysis that determines whether barbital, a barbiturate-class medication, is present in your blood serum. Barbiturates are central nervous system depressants that have been used historically as sedatives, hypnotics, and anticonvulsants. This test uses your blood sample to detect the presence or absence of barbital.
During the test, a healthcare professional will draw a blood sample from a vein in your arm. The sample is then sent to a laboratory where it is analyzed using specialized techniques to identify whether barbital compounds are present in your bloodstream.
Reference range
Not detected (negative). Therapeutic and toxic ranges vary; refer to laboratory-specific reference values.N/A
No fasting required. Specimen should be collected prior to administration of next dose when monitoring therapy. Avoid alcohol consumption prior to collection.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings3
Frequently asked questions
Why do I need this test?
What do the results mean?
Is fasting required before this test?
Are there any risks with this test?
Sources
- 1
- 2
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 15, 2026. · Read our editorial policy