label: Abnormal double-negative T cell proportion
label_lc: abnormal double-negative t cell proportion
description: Abnormal increase or decrease of double-negative (DN) CD3+CD4-CD8- T cells, measured either as percentage of total CD3+ T cells in the blood, or as absolute number per microliter of blood, compared to a reference range for a given sex and age-group. These are usually measured within the TCR alpha/beta positive population.