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), Cilia-Associated Respiratory Bacillus (CARB), Lymphocytic Choriomeningitis Virus (LCMV), Mouse AdeNovirus-1 (MAV-FL, MAV-1), Mycoplasma pulmonis, (MPUL), Pneumonia Virus of Mice (PVM), Respiratory Enteric Virus III (REO), Sendai Virus (SEV), Clostridium piliforme (CPILI), Encephalitozoon cuniculi (ECUN), Hantaan Virus (HANT), and Infectious Diarrhea of Infant Rat (IDIR). Fecal PCR: Helicobacter (HELICO), Pinworms (PIN), Klebsiella oxytoca (KOXY), Klebsiella pneumoniae (KPNE), Pseudomonas aerugiNosa (PAER), Salmonella spp. (SALM), Spironucleus muris (SMUR), Cryptosporidium (CRYP), Giardia (GIAR), Entamoeba muris (EMUR), Campylobacter spp (CAMPY), Proteus mirabilis (PMIR), and Tritrichomonas muris (TMUR). Oral PCR: Rodentibacter pneumotropica (RPNEU), Rodentibacter heylii (RHEYL), Bordetella bronchiseptica (BBRO),Corynebacterium kutscheri (CKUT), Streptococcus spp. Beta-Hemolytic (SBETA), Streptobacillus moniliformis (SMONI), Bordetella hinzii (BHIN), Pasteurella multocida (PMUL), Staphylococcus aureus (SAUR), and Streptococcus pneumoniae (SPNE). Skin PCR: Fur mites (FUR).