Genotyping by Sequence Analysis<<Return to Laboratory
Genotyping of Hepatitis Delta virus by conventional RT-PCR followed by DNA sequencing.
- Hepatitis D
Serum or plasma sample. Minimum volume required for serum or plasma is 1.0 mL.
Collect blood in serum separator tubes (SST) or EDTA tubes.
Store samples frozen until shipped for testing. Ship frozen on dry ice
Shipping of specimens shall be done by a TDG certified individual in accordance with TDG regulations. For additional information regarding classification of specimens for the purposes of shipping, consult either Part 2 Appendix 3 of the TDG Regulations or section 3.6.2 of the IATA Dangerous Goods Regulations as applicable.
Suspected Hepatitis Delta virus infection. Serology results must show markers to the Hepatitis Delta virus (anti-HDV IgG).
Completed Viral Hepatitis and Bloodborne Pathogens requisition including sender name, address and telephone number. Patient name or identifier (referring specimen lab #), date of birth, suspected exposure, test(s) requested. Type of specimen and date collected. If possible, include the clinical history and lab results that have already been done at local or provincial laboratories.
Repeated testing of HDV genotype for chronic hepatitis D patients is not warranted unless superinfection/re-infection is suspected.
Conventional RT-PCR of the small HDV antigen coding region followed by sequencing and phylogenetic analysis in comparison to HDV genotype reference sequences.
19 calendar days.
- Dény P. Hepatitis delta virus genetic variability: from genotypes I, II, III to eight major clades? Curr Top Microbiol Immunol. 2006;307:151-71.
- Theamboonlers A, Hansurabhanon T, Verachai V, Chongsrisawat V, Poovorawan Y. Hepatitis D virus infection in Thailand: HDV genotyping by RT-PCR, RFLP and direct sequencing. Infection. 2002 Jun;30(3):140-4.