Histopathology Reference Laboratory is one of the nation's leading providers of histology slides for hospitals and doctor's offices. It can test dermatology samples and provides cassettes and mailing materials for said samples free of charge. Staining samples include PAP smears, cell blocks and cerebrospinal fluids. Agents are available 24/7 to handle slide requests, receive new specimens and to offer tech support when needed. Call for further information or visit the Histopathology Reference Laboratory Web site.