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HelpTest ID FACYS Acyclovir, Plasma
Specimen Required
***Must submit one specimen per order. Specimens cannot be shared between multiple orders.***
Specimen Type: Plasma
Collection Container/Tube: Lavender top or pink top (EDTA)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Draw blood in an EDTA (lavender top or pink top) tube(s). Plasma gel tube is not acceptable.
2. Centrifuge and send 1 mL of plasma refrigerated in a preservative-free plastic vial.
Secondary ID
75396Method Name
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Reporting Name
Acyclovir, PlasmaSpecimen Type
Plasma EDTASpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma EDTA | Refrigerated (preferred) | 30 days |
| Frozen | 120 days | |
| Ambient | 30 days |
Reference Values
Reporting limit determined each analysis.
For using Acyclovir:
Usual therapeutic range (vs. Genital Herpes) during chronic oral daily divided dosages of 1200 - 2400 mg:
Peak: 0.40 - 2.0 mcg/mL plasma
Trough: 0.14 - 1.2 mcg/mL plasma
For using Valacyclovir as a metabolite:
Mean steady-state (± 1 SD) peak plasma levels following a 500 mg twice daily regimen
of Valacyclovir:
2.0-4.0 mcg Acyclovir/mL
Day(s) Performed
Monday - Sunday
Report Available
9 to 11 daysPerforming Laboratory
NMS LabsTest Classification
This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
80299