A
5200 Harry Hines Blvd.
,
Dallas
,
TX
75235
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General Information
Performed: 24/7
Turn Around Time: Med Emerg: 2 hour; Routine: 4 hrs
CPT Codes: 80184
Performed By: Chemistry
Clinical Utility:
The usage of phenobarbital levels is limited as the concentration to control seizures is variable. In addition, the development of tolerance to the drug and CNS side-effects makes the toxic threshold imprecise.
Dose related side-effects of phenobarbital include fatigue, sleepiness, drowsiness, listlessness, depression, irritability and insomnia. The mean lethal serum concentration of phenobarbital is 136.0 mg/L.
Components
Name |
Method |
Sex |
Age Range |
Ref. Range Low |
Ref. Range High |
Units |
Phenobarb Lvl |
Particle-enhanced turbidiimetric inhibition immunoassay |
All |
All |
10.0 |
40.0 |
mcg/mL |
Specimen Requirements
Type |
Container |
Volume |
Units |
Collection / Delivery |
Storage / Transport |
Off Campus |
Blood |
Red no Gel, 6mL |
Fill tube |
|
Collect just before next dose. Collect anytime for suspected toxicity. Deliver to Logistics Lab. |
Room Temperature |
Serum should be separated from cells within 2hrs of collection. Deliver refrigerated serum aliquot to Logistics Lab. |