Serology: Kilham Rat Virus (KRV), Toolan’s H-1 Parvovirus (H-1), Pneumocystis carinii (PCAR), Rat Coronavirus (SDAV/RCV), Rat Minute Virus (RMV), Rat Parvovirus (RPV), Rat Theilovirus (RTV). Fecal PCR: Helicobacter (HELICO) and Pinworms (PIN). Skin PCR: Fur mites (FUR).