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Hepatitis B Virus DNA, Quantitative, Real-Time PCR

Test Code


CPT Code(s)


Preferred Specimen(s)

1.5 mL (x2) plasma collected in EDTA (lavender-top) tubes

Minimum Volume

1.25 mL (x2)

Alternative Specimen(s)

Plasma collected in: PPT potassium EDTA (white-top) tubes • Serum

Collection Instructions

3 mL plasma, collected in two (2) EDTA lavender-top tubes. Separate plasma from whole blood within 1 day of collection by centrifugation at 800 to 1600 x g for 20 minutes at room temperature (minimum 2.5 mL). Ship frozen.

Specimen Container

Plastic screw-cap vial(s)

Transport Temperature


Specimen Stability

Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 42 days


Real-Time Polymerase Chain Reaction (RT-PCR)

The analytical performance characteristics of this assay have been determined by Quest Diagnostics Nichols Institute Chantilly, VA.  The modifications have not been cleared or approved by the FDA.  This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Performing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

Setup Schedule

Set up: Tues-Sat a.m.; Report available: Next day


Results obtained from immunosuppressed patients should be interpreted with caution.

Reference Range(s)

Hepatitis B Virus DNA <20 IU/mL
Hepatitis B Virus DNA <1.30


This test was performed using the COBAS® AmpliPrep/COBAS® TaqMan® HBV Test, v2.0 (Roche Molecular Systems, Inc.).

To convert International Units/mL to copies/mL, use the following conversion factor:
1 IU/mL = 5.82 copies/mL

Clinical Significance

Chronic carriers will persist in producing detectable HBV. Patients with chronic liver disease of unknown origin most commonly have HBV that is detected by viral DNA testing. Quantitative measurement of HBV viral DNA may be used to monitor progression of disease.

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result NameLOINC CodeComponent Name
35222AHepatitis B Virus DNA42595-9Hepatitis B virus DNA
35222BHepatitis B Virus DNA48398-2Hepatitis B virus DNA

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.