Morning pseudoneutropenia is a transient reduction in the measured neutrophil count from peripheral samples.
The absolute neutrophil count in this test will be below 500, and can reach 0 cells/mm3.
In patients receiving anakinra a decrease in neutrophil counts may be found.
If this confirms a low neutrophil count, discontinuation of the drug leads to recovery.
A low neutrophil count (neutropenia) may also occur when white blood cells are destroyed faster than they can be produced.
Nervousness will very slightly raise the neutrophil count because of this effect.
Risk of seroconversion appeared to be correlated with Duffy-null-associated low neutrophil counts.
Patients with low neutrophil counts may be given filgrastim or a similar hormone to stimulate production of white blood cells.
Low neutrophil counts are detected on a full blood count.
The relationship between a low neutrophil count and increased risk of infection was first demonstrated in patients with leukemia.