Often, companies will tell you you're paying $0.10 per sample, but "you can't just go off their numbers. You have to really cost it out," says Jeanette Papp, director of the UCLA Genotyping and Sequencing Core Facility. Some companies will sell enough primer for 4,000 samples even if you don't need it. Anticipate the sample quality and whether you need to rerun the samples, a factor that companies don't account for.












