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Molecular Diagnostics


Sample Requirements for Molecular Diagnostics

Fresh samples always provide the best results. Tissue and fecal sample are best kept frozen, EDTA blood samples are best kept in a refrigerator for no more than one week, serum, plasma, swabs and washes can be kept frozen or refrigerated, and ticks are best kept refrigerated or at room temperature. Ticks in alcohol will be accepted, but ideally they are in a sealed, labeled container without alcohol.

Formalin-fixed, paraffin-embedded (FFPE) samples will be accepted for any test listing tissue as an acceptable specimen type, with the understanding that FFPE can produce false negative results due to the crosslinking of DNA. If FFPE is the only sample available, it should be cut in 3 serial sections and placed onto glass slides before being submitted, preferably with any lesions circled on the bottom of the slide. There is an additional $20 fee for all FFPE samples, with the exception of Panfungal PCR and sequencing (test code FPPST).

All samples should be in labeled, unbreakable containers, and sent overnight on cold-packs or, if all samples are frozen, on dry ice.

Please see "Research support" for instructions on bulk sample submissions.