 ANA and RF were unremarkable. He was treated for a UTI with amoxacillin. Vitamin B12 level was reduced at 139pg/ml (normal 232-1137). Schillings test was inconclusive dure to inability to complete a 24-hour urine collection. He was placed on empiric Vitamin B12 1000mcg IM qd x 7 days; then qMonth. He was also placed on Thiamine 100mg qd, Folate 1mg qd, and ASA 325mg qd. His ESR and CRP were elevated on admission, but fell as his UTI was treated.