The results showed that 98.5 percent of the known bloodstain samples yielded DQa typing results; 102 of the 149 (68 percent) questionable blood or semen-containing samples yielded similar results. Of the 78 cases that were RFLP inclusions, 59 yielded interpretable DQa results and these were all inclusions. The remaining cases could not be interpreted for the gene. Of the 18 RFLP exclusions, 11 were DQa exclusions, four were DQa inclusions, and three could not be determined. The authors note that employment of a human DNA quantification method in DQa casework would allow the user to use sufficient quantities of DNA for amplification and would also provide a guide for determining if a PCR inhibitor were present. They conclude that the findings from this study support the use of HLA DQa typing to analyze forensic samples. 2 tables, 1 figure, and 21 references