Sign in →

Test Code VALP VALPROIC ACID

Additional Codes

LAB25

Performing Laboratory

Porter Hospital Laboratory

Specimen Requirements

Specimen Type: Blood
Container/Tube: Tiger top, serum gel
Also Acceptable: Green top (Lithium Heparin)
Specimen Volume: Full tube, submit 0.4 mL serum
Specimen Minimum Volume: 0.35 mL
Collection Instructions:
1. Send specimen in original tube.
2. If there is a delay in transport of >1 hour, centrifuge tube.
3. Centrifuged samples are stable for:
• 8 hours at room temperature
• 2 days at 2 – 8º C
For longer storage, freeze at -20ºC or colder.

Specimen Transport Temperature

Refrigerated

Test Schedule / Analytical Time / Test Priority / Turn around Time

Daily / 24 Hours / Available STAT / Routine - 4 Hours

                                                        STAT - 60 Minutes

Test Classification and CPT Coding

80164

Normal Reference Values

50-100 mcg/mL

Critical Values

*New range as of 3/17/2025

* 0 - 18 years:  ≥125 ug/mL

18 years and up:  >150 µg/mL