HBV Drug Resistance and Genotyping
Clinical System Name
Miscellaneous Test
Sample Requirements
Specimen: Whole Blood
Container(s): Lavender/EDTA, Red, or Gold SST
Preferred Vol: 3.0 mL
Minimum Vol: 1.5 mL
Note:
Processing Instructions
Reject due to:
Spin: Y
Aliquot: Y
Temp: -20 C
Storage Location: -20 CPA freezer, Send Outs rack.
Off-site Collection:
Stability
Specimen Type | Temperature | Time |
Plasma/Serum | Room Temp | 24 h |
Refrigerated | 72 h | |
Frozen | Indefinitely |
Performing Laboratory
University of Washington Medical Center
Department of Laboratory Medicine
Molecular Virology Laboratory
1959 NE Pacific St, NW220
Seattle, WA 98195
Phone Number: (206) 520-4600
Department
Department: Send Outs
Phone Number: (206) 987-2563
Send Out Instructions
Reference Test Name: | HBV Drug Resistance and Genotyping |
Reference Test Code: | HBVGTD |
Instructions: | Send Monday through Friday with the UW courier. |
Synonyms
HBV Drug Resistance
HBV Genotype
HBV POL Gene Sequencing
Description
HBV Drug Resistance and Genotyping is determined by Sanger sequencing. An 850bp region of the HBV DNA polymerase gene is sequenced, then compared to an HBV genotyping and drug resistance database provided by Genofar, a German, non-profit, scientific society. PCR sensitivity is 75 IU/mL. Minor subpopulations of mutant viruses below 20-25% of the total HBV population may not be detected. Drug resistance analysis includes Lamivudine, Adefovir, Entecavir, Tenofovir, and Telbivudine.
Availability
STAT | Performed | TAT |
N | T | 2 - 7 d |
Methodology
Method: Sanger Sequencing
Analytical Volume: 0.7 mL Plasma or Serum
Limitations:
Reference Ranges
Interpretive report provided.
CPT Codes
87912