alphabetical test list a b c d e f g h i j k l m n o p q r s t u v w x y z 0-9 Occult Blood, Stool Oligoclonal bands, CSF Electrophpresis Opiates in urine Osmolality urine Osmolality , serum Osmotic Fragility, Red Cells Oxalate Spot urine level Oxalate, 24 hrs urine (Quantitative)