Quick Review Cards for Medical Laboratory Science

Technologies Used in Automated

Hematology Analyzers

Hematology Review 333

MANUFACTURER TECHNOLOGIES

Impedance instruments
Beckman Coulter Cell counting & sizing: electrical impedance
(LH Series) WBC differential: VCS technology

PARAMETER MEASUREMENT INFORMATION

Volume Direct current (DC) impedance Cell volume

Conductivity (opacity) Radiofrequency (RF) Cell size & internal structure

Scatter Light scatter as cells pass through Cell surface structure & cellular

laser beam granularity

Sysmex Impedance, radiofrequency, absorption spectrophotometry, & flow cytometry with fluorescent dyes
(X-Series)

Abbott Impedance, fluorescence staining, flow cytometry, multiangle polarized scatter separation (MAPSS)
(CELL-DYN)

Light-scattering instruments
Siemens Light scattering & cytochemical analysis
(Advia)