Calculation of CSF Cell Count
In general, use the following equation to calculate CSF cell count:
- (total cells counted x dilution) / (number of squares counted x volume of 1 square) = cells per microliter.
For an undiluted specimen in which 10 squares are counted:
- (total cells counted x 1) / (10 squares counted x 0.1 mm3 per square) = cells per microliter.
Therefore, in this example:
- (total cells counted) / (1 mm3) = cells per microliter.
1 mm
3 is equal to 1 microliter.
