Phenobarbital, Total/Unbound/Bound, Serum/Plasma
Abbrev Code: | PHENTUB | ||
Order Code: | LAB1250 | Order Name: | Phenobarbital, Total/Unbound/Bound |
Synonyms: | Luminal; Phenobarbital, Free | ||
Methodology: | Quantitative high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) | ||
CPT Codes: | 80184 x1, 80184 x1, 80184 x2 | ||
Turnaround Time: | Specimens are sent to the reference laboratory Sun-Sat; results are reported within 8-11 days. | ||
Compliance: | Performed by a non-ARUP laboratory. |
Collection Instructions
Specimen: | Blood |
Optimal Volume: | 4 mL |
Minimum\Peds Volume: | 2 mL |
Container: | Red (no gel) Alternate Containers: Purple (EDTA) |
Collection Instructions: | Trough levels are the most reproducible. |
Causes for Rejection: | Collected in gel tubes. |
Processing and Shipping
Specimen Processing: | Centrifuge and separate from cells ASAP or within 2 hours of collection. Aliquot 2 mL, 0.9 mL minimum. Store in refrigerator.
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered. |
Shipping Instructions: | Ship at refrigerated temperature. |
Stability: | 3 months at room temperature or refrigerated; 80 months frozen. |
Test Performed at or Referral Lab | Lab Sendouts (ARUP) |
Referral Lab number: | 0091551 |
Interpretive
Critical Range: | By report. |
Use: | Optimize drug therapy and monitor patient adherence. |
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