Abstract: Primer sequences and a method of using such sequences for the genotyping of HIV-1-containing samples, particularly those which have failed genotyping analysis are provided using primer sequences designed for analysis of Group B subtype of the Group M type virus. For example, a combination of primers, including at least one species of forward primer and at least one species of reverse primer where the forward primer(s) can be represented by the degenerate sequence: RARRARGGGCTGYTGGARATGTS (Seq. ID No. 9) and the reverse primer(s) can be represented by the degenerate sequence: BCHTYACYTTRATCCCSGVRTARATYTGACT (Seq. ID No.: 10) or BCHTYACYTTRATCCCSGVRTARATYTGAC (Seq. ID No. 12) are suitably employed. The selected primers, one or more from each group, can be used as reverse transcription, amplification and sequencing primers and are suitably packaged in a genotyping kit.