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Ortho-mune OK-COMBO CD3-FITC/CD4-PE is intended for use in identification and enumeration of CD3+ and CD4+ human T lymphocytes in whole blood by flow cytometry. The intended use is the same as the intended use of the predicate device, Simultest CD3/CD4 (Leu-4/3a) commercially distributed by Becton Dickinson Immunocytometry Systems.

Ortho-mune OK-COMBO CD3-FITC/CD4-PE (OKT3/OKT4A) Monoclonal Antibody (Murine) is a blend of the individual purified monoclonal antibodies OKT3 and OKT4A conjugated to the fluorochromes fluorescein isothiocyanate and phycoerythrin respectively.

The provided text describes a 510(k) summary for the Ortho-mune OK-COMBO CD3-FITC/CD4-PE (OKT3/OKT4A) Monoclonal Antibody (Murine) device, which is intended for the identification and enumeration of CD3+ and CD4+ human T lymphocytes in whole blood by flow cytometry. The study aims to demonstrate substantial equivalence to a predicate device, Simultest™ CD3/CD4 Ortho-mune™ OK-COMBO (Leu™-4 / 3a) CD3-FITC/CD4-PE (OKT™3 /OKT4A) Monoclonal Antibody (Murine).

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Acceptance Criteria and Reported Device Performance

The acceptance criteria are implicitly defined by achieving a statistically significant correlation between the performance of the new device (Ortho-mune OK-COMBO CD3-FITC/CD4-PE) and the predicate device (Simultest CD3/CD4), as well as between different flow cytometers used with the new device. The benchmark for significance is a p-value (SL) of 0.0001, indicating a very high probability of correlation. The Pearson Product Moment Correlation Coefficient is the metric used to assess this.

Table 1: Acceptance Criteria and Reported Device Performance

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