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25091 Barbiturates, Urine, Confirm Only by GCMS

Barbiturates, Urine, Confirm Only by GCMS
Test Code: CO-BAR
Synonyms/Keywords
Amobarbital, Amytal, Phenobarbital, Luminal, Nembutal, Pentobarbital. Secobarbital, Seconal, Solfoton, Phenobarbital, Butalbital, Fiorinal​
Useful For
Detecting exposure to barbiturates to monitor compliance in taking prescribed medications or to detect abuse​
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Urine​ Sage urine collection container​ Sterile plastic container with no preservatives​ 5 mL​ 3 mL​ 1.5 mL​
Specimen Stability Information
Specimen Type Temperature Time
Urine​ Ambient​ 72 hours​
Refrigerate (Preferred)​ 30 days​
Frozen​ 30 days​
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 2-4 days​ Gas chromatography-mass spectrometry (GCMS) using selected ion monitoring​
Test Information
 This test was developed and its performance characteristics determined by Marshfield Labs. This laboratory is certified under the Clinical Laboratory Improvement Amendments (CLIA) to perform high complexity testing.​
 
This test is a GCMS confirmation only for the barbiturates drug class. It is intended for use only in patients where an initial drug screening test has already been performed at the time of specimen collection (i.e. Point-of-Care drug screening cup, dipstick, etc.). The specimen will not be screened by immunoassay in the laboratory; it will only be tested by GCMS. If an initial drug screen has not been performed at the specimen collection site, it is more appropriate to order the "Barbiturates, Urine" (BAR) test code which includes an initial screen. The test will detect the presence of butalbital, amobarbital, pentobarbital, secobarbital and phenobarbital.
Reference Range Information
Performing Location Reference Range
Marshfield​

Negative.  Positives are reported with a quantitative GCMS result.

Interpretation

Current Cutoff Levels for Toxicology

Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
80345​ ​ 1​ ​Barbiturate Confirmation by GCMS ​
​G0480 ​ ​1 ​Barbiturate Confirmation by GCMS ​For Medicare/Medicaid
Classification
This test was developed and its performance characteristics determined by Marshfield Labs. This laboratory is certified under the Clinical Laboratory Improvement Amendments (CLIA) to perform high complexity testing.​
Synonyms/Keywords
Amobarbital, Amytal, Phenobarbital, Luminal, Nembutal, Pentobarbital. Secobarbital, Seconal, Solfoton, Phenobarbital, Butalbital, Fiorinal​
Ordering Applications
Ordering Application Description
​Centricity ​Barbiturates, Urine, Confirm Only by GCMS
​Cerner ​Barbiturates, Urine, Confirm Only
​COM ​Barbiturates, Urines, Confirm
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Urine​ Sage urine collection container​ Sterile plastic container with no preservatives​ 5 mL​ 3 mL​ 1.5 mL​
Specimen Stability Information
Specimen Type Temperature Time
Urine​ Ambient​ 72 hours​
Refrigerate (Preferred)​ 30 days​
Frozen​ 30 days​
Useful For
Detecting exposure to barbiturates to monitor compliance in taking prescribed medications or to detect abuse​
Reference Range Information
Performing Location Reference Range
Marshfield​

Negative.  Positives are reported with a quantitative GCMS result.

Interpretation

Current Cutoff Levels for Toxicology

For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 2-4 days​ Gas chromatography-mass spectrometry (GCMS) using selected ion monitoring​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
80345​ ​ 1​ ​Barbiturate Confirmation by GCMS ​
​G0480 ​ ​1 ​Barbiturate Confirmation by GCMS ​For Medicare/Medicaid
Classification
This test was developed and its performance characteristics determined by Marshfield Labs. This laboratory is certified under the Clinical Laboratory Improvement Amendments (CLIA) to perform high complexity testing.​
For most current information refer to the Marshfield Laboratory online reference manual.