Cerebro-spinal fluid Collect 0.3 mL into a fluoride oxalate tube (for glucose) and 0.5 mL into 3 or 4 separate sterile plastic universal containers. Universals No. 2 and 3 are sent to us for the bacterial and viral studies. The fluoride oxalate sample and universal No. 1 (which may be contaminated with skin organisms) should be sent directly to Chemical Pathology. NOTE – if spectrophotometry for xanthochromia required, collect a fourth universal containing 1 mL CSF and send to Chemical Pathology.
