Evaluation of the new body fluid mode on the Sysmex XE-5000 for counting leukocytes and erythrocytes in cerebrospinal fluid and other body fluids.

Background: We evaluated the body fluid (BF) mode on the new Sysmex XE-5000 analyzer.

Methods: Red (RBC) and white blood cell (WBC) (differential) counts of BFs (139 patient samples and 87 normal samples) were measured and compared to the Fuchs-Rosenthal chamber and stained cytospin slides.

Results: Extended cell counting using the BF mode was noted to have an improved WBC detection limit (CV(20)%) of 10 x 10(6)/L.