Flow rate calibration II: a clinical evaluation study using PanLeucoGating as a single-platform protocol.
Cytometry B Clin Cytom
; 55(1): 8-13, 2003 Sep.
Article
em En
| MEDLINE
| ID: mdl-12949954
ABSTRACT
BACKGROUND:
CD4(+) T-lymphocyte enumeration is vital for monitoring disease progression in individuals positive for the human immunodeficiency virus (HIV), and as a result, there is a need to develop cost-effective protocols that provide accuracy, precision, and affordability. Recently, PanLeucoGating has been shown to fulfill these requirements; however, although comparable to state-of-the-art single-platform protocols (SP), there is still a requirement for an accurate total white cell count. To overcome this limitation, we recently developed a flow-rate based calibration method that enables the PanLeucoGating protocol to be used as a SP approach, and in this study show that this approach can be used for CD4(+) T-lymphocyte enumeration.METHODS:
A total of 113 HIV samples were analyzed using three protocols (a) state-of-the art SP bead-based method (MultiSet; predicate protocol), (b) PanLeucoGating protocol used as a dual-platform (DP) approach, and (c) the newly developed flow rate-based SP approach. We demonstrate that flow rate calibration can be achieved easily and that the method is highly comparable to the state-of-the-art SP method.RESULTS:
A high correlation was observed between the predicate protocol and the SP PanLeucoGating approach over the whole range of CD4 counts tested (r(2) = 0.9928; bias 8 cells/microl), including the clinically relevant range (e.g., 0-200 CD4 cells/microl; bias 0 cells/microl). For batched samples, the cost of providing a CD4(+) T-lymphocyte count was reduced to approximately US $1.CONCLUSIONS:
The SP PanLeucoGating is a cost-effective approach to CD4(+) T-lymphocyte enumeration that maintains accuracy and precision.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Contagem de Linfócito CD4
/
Citometria de Fluxo
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
/
Guideline
/
Prognostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article