Body Fluid Cell Count and Differential
Label Mnemonic: BFX
Epic Lab Code: LAB1017
Order Form: Laboratory Requisition
Miscellaneous Body Fluids
Collection Medium:
Lavender top tube 3 mL (EDTA) Miscellaneous container; contact laboratory
1.0 mL
Rejection Criteria:
Galeal, cyst fluids, pus from abscesses and biliary drainage are not acceptable specimens.
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
3 hours (upon receipt in laboratory)
Includes cell counts and total nucleated cell differential if three or more cells are found. The differential is based on the morphologic examination of a wright-stained cytospin preparation. The cells are reported as number per μL; erythrocytes, total nucleated cells, neutrophils, eosinophils, lymphocytes, and a composite group of monocytes-histocytes-macrophages mesothelials. These slides are retained for approximately two months.
Count and Wright Stain
Synovial fluid specimens must be sent in an EDTA tube (lavender top) since they often clot. Samples should be received in the laboratory within four hours of collection.
Sample Processing:
Submit in leak-proof container.
Specimen source is required on requisition for processing.
Do Not Centrifuge.
Sample Storage:
Transport Instructions:
Place specimen into zip-lock type bag, seal bag.
Place requisition into outside pocket of bag.
Transport in cooler with refrigerated coolant packs.
CPT Code: