More than 65% of physicians who responded to the survey were noted to perform full blood counts frequently to monitor patients with suspected or confirmed dengue.
Thus, tools such as the full blood count, clinical predictors of dengue,  and serial follow-up of suspected cases become even more important.
Fortunately, at the time of clinical assessment, although clinicians were not blinded to the full blood count
, they were not aware of this hypothesis, thus diminishing diagnostic bias.
With minor changes and additions to current reference intervals for full blood counts and absolute CD4 testing, these ranges will be more representative of the current patient demographics in Gauteng province and the updated technology in use at NHLS laboratories.
The full blood count and CD4 count are two frequently performed tests in HIV-endemic settings such as Gauteng province, South Africa.
3-5) The results of three published full blood count reference ranges since 1980 are summarised in Table I.