Body Fluid Cell Count and Differential
Miscellaneous Body Fluids
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.
|Lavender top tube 3 mL (EDTA)
||Miscellaneous container; contact laboratory
Galeal, cyst fluids, pus from abscesses and
biliary drainage are not acceptable specimens.
24 hrs/day, 7 days a week, including holidays.
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