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. 2021 Apr 1;6(4):225–235. doi: 10.1302/2058-5241.6.200017

Table 4.

PLRA (Platelet count, Leukocyte content, RBC content, Activation) classification

Criteria Final Score
P Platelet count ____P
Volume Injected
_____M
Cells/µL
L Leucocyte content* > 1%
< 1%
+
R Red blood cell content > 1%
< 1%
+
A Activation** Yes
No
+
*

If white blood cells are present (+), percentage of neutrophils should be reported.

**

The method of exogenous activation should be reported.