CD4 Stabilization Tubes Provide Improved Accuracy of Absolute CD4 T-Cell Counts Compared to Standard K 3 EDTA Tubes in Human Immunodeficiency Virus Immunologic Monitoring in Resource-Poor Settings

CD4 stabilization tubes have the ability to ensure internal quality control in the human immunodeficiency virus (HIV) monitoring laboratory by maintaining accurate absolute CD4 T-cell counts for up to 6 days. Here, we assessed this technology for its use in an HIV clinical monitoring laboratory in a resource-poor setting in rural Uganda.