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. 2015 Mar 19;10(3):e0115019. doi: 10.1371/journal.pone.0115019

Table 4. Operating characteristics of other commercially available technologies for CD4+ T-cell enumeration.

OTHER COMMERCIALLY AVAILABLE TECHNOLOGIES
Assay name PocH-100i/KX-21N with Dynal Dynabeads CD4 Select
Manufacturer Sysmex i+MED Laboratories Co. Ltd.
Instrumentation Haematology analyser Haematology analyser, magnet, rotator
Assay principle CD4 cell isolation using modified Dynal dynabeads, counting using haematology analyser with specific software Ferrous beads coated with MT4 mAb bind to CD4 T cells, which are then removed using magnet. Whole blood and CD4-deplete blood counted on haematology analyser. CD4 count and % calculated using established formulae
Parameters measured Absolute CD4 count and CD4% Absolute CD4 and CD4%
Specimen 125 μl whole blood in EDTA 400μl whole blood in EDTA
Throughput 12 samples/hour No data available
Compatible with independent EQA/PT programmes? No EQA evaluation data available No EQA evaluation data available
Is there access to compatible full process QC reagent? No data available No data available
Maximum length of time from blood draw to testing 24 hours at 4 or 20°C No data available
Can the test be performed on fixed/ stabilised blood No data available No data available
Complexity/training required Moderate complexity Moderate complexity
Environmental/energy issues Requires power for haematology analyser Requires power for haematology analyser and rotator
Robustness to heat/humidity No data available No data available