Comparing the AQUIOS CL PLG Application to the FC500 MCL FlowCARE PLG Application

The performance of the AQUIOS PLG System (or application) was assessed by comparing the results to the comparator estimation of difference as described in CLSI EP9-A3 Measurement Procedure Comparison and Bias Estimation Using Patient Samples; Approved Guideline, Third Edition. The comparator used FlowCARE PLG CD4 Reagent, ImmunoPrep Lysing reagent, and Flow-Count for CD4+ cell enumeration on FC 500 MCL flow cytometer with CXP software. The method comparison is comprised of HIV specimens from 38 pediatric and 202 adult subjects. The data provided in Table 1 and Figure 1 supports the premise that the systems are equivalent in their performance enumerating CD4+ lymphocytes in peripheral whole blood. Values are expressed in terms of percentage (%) of the total lymphocyte count and as absolute count (cells/µL) for total CD4+ cells.

Table 1. Measurement Procedure Comparison - Whole Blood

 FLOWC-HIV-aquios-plg table 1 - Section 9

Table 2. Measurement Procedure Comparison of the AQUIOS PLG Application and the FC500 MCL FlowCARE PLG

FLOWC-HIV-aquios-plg table 2 - Section 9

Figure 1. Regression Analysis of CD4+ Cells on the AQUIOS PLG Application and the Predicate

FLOWC-HIV-aquios-plg regression 1 - Section 9


Based on this study, the data suggests a strong correlation between the AQUIOS CL PLG application and the FC500 MCL FlowCARE PLG application.

AQUIOS CL is a Class I Laser Product


Purity and recovery are important

in the calculation of percentages

and absolute counts of lymphocyte

subsets.  Learn more about our

gating strategy for Tetra reagents

FLOWC-HIV-aquios gating strategy - Section 9

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HIV Advanced Disease Management Solutions

HIV Advanced Disease Management Solutions

Monitoring CD4 lymphocyte counts is essential in providing critical information that impacts patient care. CD4 monitoring allows caregivers to know when the disease transforms and stage its progression so they can implement the most appropriate intervention.. 


By focusing on the most essential parameters for monitoring HIV therapies (CD45 vs CD4), AQUIOS PLG addresses cost, complexity, and the time previously required by labor-intensive processes to provide busy laboratories with an affordable, high-performance monitoring solution.

Fast Throughput Subset Analysis with AQUIOS CL

In the clinical management of immune deficiency diseases, accurately counting the absolute cell numbers of leukocyte subsets and measuring the percentage of individual subtypes in blood is critical.

AQUIOS CL Tetra and Aged Whole Blood samples​

The use of flow cytometric analysis of peripheral whole blood to enumerate lymphocyte subsets is commonly used to assess the immunological status of patients in a wide variety of clinical conditions.