Approach to the pt with hematuria. ANCA, antineutrophil cytoplasmic antibody; ASLO, antistreptolysin O; GBM, glomerular basement membrane; VDRL, Venereal Disease Research Laboratory. (From Lin J and Denker BM: Chap. 61. Examination of Blood Smears and Bone Marrow, p. 289, HPIM-19.)