agranulocytosis

https://doi.org/10.1351/goldbook.12855
Failure of the bone marrow to make sufficient granulocytes, especially neutrophils.
Note: This is normally identified by a neutrophil count less than \(\pu{0.5E9}\) per litre of blood.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1120 [Terms] [Paper]