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Test Code FACYS Acyclovir, Plasma

Specimen Required

Draw blood in EDTA (lavender top) tube(s) (Plasma gel tube is not acceptable.) Spin down and send 1 mL of plasma refrigerate in preservative-free plastic vial.

Secondary ID


Method Name

High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

Reporting Name

Acyclovir, Plasma

Specimen Type

Plasma EDTA

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Plasma EDTA Refrigerated (preferred) 30 days
  Frozen  120 days
  Ambient  30 days

Reject Due To

Hemolysis NA
Lipemia NA
Icterus NA
Other Polymer gel separation tube (SST or PST)

Reference Values

Reporting limit determined each analysis.

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

Day(s) and Time(s) Performed

Monday - Sunday

Performing Laboratory

NMS Labs

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FACYS Acyclovir, Plasma 9416-9


Result ID Test Result Name Result LOINC Value
Z3531 Acyclovir 9416-9