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HelpTest Code PENTS Pentobarbital, Serum
Reporting Name
Pentobarbital, SPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Monitoring of pentobarbital therapy treatment
Method Name
Gas Chromatography Mass Spectrometry (GC-MS)
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Red top (Serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 2 mL
Collection Instructions:
1. Draw blood immediately before next scheduled dose.
2. Centrifuge and aliquot serum in plastic vial within 2 hours of collection.
Specimen Type
Serum RedSpecimen Minimum Volume
0.7 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Refrigerated (preferred) | 14 days | |
| Ambient | 14 days | ||
| Frozen | 14 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
Therapeutic range
Hypnotic: 1-5 mcg/mL
Therapeutic coma: 20-50 mcg/mL
Reducing intracranial pressure: 30-40 mcg/mL
This degree of sedation requires artificial respiratory support.
Toxic concentration: >10 mcg/mL
Interpretation
Pentobarbital concentrations above 10 mcg/mL have been associated with toxicity.
Day(s) Performed
Thursday
Report Available
3 to 9 daysTest Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
80299
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| PENTS | Pentobarbital, S | 3924-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8239 | Pentobarbital, S | 3924-8 |
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.