DIN 58932-6:2021 Edition
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Haematology – Determination of the concentration of blood corpuscles in blood – Part 6: Reference method for the determination of the concentration of CD4 positive lymphocytes (Draft)
Published By | Publication Date | Number of Pages |
DIN | 2021-02 | 35 |
This document applies to the determination of CD4-positive lymphocytes in human blood using a reference method. It only applies to the analytical phase. Working according to the equipment specific and metrological requirements of this document ensures, that the concentration of CD4-positive lymphocytes in blood is determined with a minimal measurement uncertainty. This document applies also for the counting of particles in stabilized control blood with fixed human blood cells or in suspensions with particles of non-biological origin (e. g., micro-particles with surface antigens), if the particles to be measured have a metrological behavior like CD4-positive lymphocytes.