Chapter 2: System overview 11
• Sheer Plastic Bandages, Sterile, Hypoallergenic, Non-
latex
• BD FACSPresto Instrument Carrying Case
• BD FACSPresto Solar Charge Kit (includes solar panel, solar
generator, and power supply)
• BD FACSPresto Solar Generator (includes solar generator and
power supply)
• BD FACSPresto Car Battery Charge Adapter
• BD FACSPresto™ Thermal Printer Paper
Contact BD Biosciences for ordering information.
Hardware The instrument is based on fluorescence photomicroscopy and
light absorbance detection on a multicolor platform. Light emitting
diodes (LEDs) shine on, or through, a sample, and the resulting
signal is captured through a microscope lens and emission filter, or
a spectrometry system, onto a digital camera chip.
Reagents Each test uses one cartridge. The cartridge contains dried reagents.
Human whole blood from either a capillary or venipuncture
specimen is added into an inlet port on the cartridge. Three assays
are performed within the same cartridge to give CD4 absolute
count, percentage of CD4
+
T cells among the lymphocytes
(%CD4), and total hemoglobin (Hb) concentration.
Software The software is integrated into the instrument. Use the touchscreen
to operate the instrument. The software algorithms perform
automatic calculation of the absolute CD4 count, %CD4, and Hb
concentration. The results display on the screen, print, and can be
exported.
More information • System components (page 12)
• Power requirements (page 89)
• Software overview (page 19)
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