Ordering Recommendation

Diagnose and monitor human parvovirus infection in patient with suppressed or delayed immune response.

Mnemonic
PARV QNT
Methodology

Quantitative Polymerase Chain Reaction

Performed

Mon, Wed, Fri

Reported

1-4 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Lavender (EDTA), pink (K2EDTA), or serum separator tube (SST).

Specimen Preparation

Separate serum or plasma from cells. Transfer 1 mL serum, plasma to a sterile container. (Min: 0.5 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Heparinized specimens.

Remarks

Specimen source required.

Stability

Ambient: 24 hours; Refrigerated: 5 days; Frozen: 6 months

Reference Interval

Not detected

Interpretive Data

The quantitative range of this test is 2.0- 8.0 log IU/mL (100 - 100,000,000 IU/mL).

A negative result (less than 2.0 log IU/mL or less than 100 IU/mL) does not rule out the presence of PCR inhibitors in the patient specimen or Parvovirus DNA concentrations below the level of detection of the test. Inhibition may also lead to underestimation of viral quantitation.

Compliance Category

Laboratory Developed Test (LDT)

Note

The limit of quantification for this DNA test is 2.0 log IU/mL (100 IU/mL). If the test DID NOT DETECT the virus, the test result will be reported as "< 2.0 log IU/mL (< 100 IU/mL)." If the test DETECTED the presence of the virus but was not able to accurately quantify the number of international units, the test result will be reported as "Not Quantified."

Hotline History
N/A
CPT Codes

87799

Components
Component Test Code* Component Chart Name LOINC
2012044 Parvovirus B19 Quant by PCR, Log IU/mL 74419-3
2012046 Parvovirus B19 Quant by PCR, Interp 48767-8
2012047 Parvovirus B19 Quant by PCR, IU/mL 74420-1
2012048 Parvovirus B19 Quant by PCR, Source 31208-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Parvovirus B19
  • Viral load monitoring
Parvovirus B19 by Quantitative PCR