Hi Histonetters, Does anyone run negative control slides with their GMS, AFB, and Gram special stains, and if so why? Kind Regards, Debby R. Grant HT(ASCP) Histology Coordinator The Children's Mercy Hospital & Clinics 2401 Gillham Rd. Kansas City, Missouri 64108 lab (816)234-3827 fax (816) 802-1492