Place specimen in a screw-top container and cover with sterile Hanks BSS, normal saline or RPMI transport media. The volume of transport media should be sufficient to keep the specimen from drying out. Do not expose to, or place in, formalin. Keep specimen at ambient temperature and transport within 24 hours. To obtain best results, the specimen needs to processed the same day as collected and always within 24 hours. STAT delivery is recommended. See Cytogenetics/Flow Cytometry/FISH Specimens for Leukemia, Lymphoma and Other Oncology Referrals.