Table 4. Median and ranges of lysosomal enzymes activity in fresh CSF.

Enzyme	Median (range) (mU/L)	25–75 percentile (mU/L)
α-fucosidase	626.40 (173.25–883.92)	392.74–681.23
α-mannosidase	172.98 (7.37–250.44)	140.3–204.86
β-mannosidase	651.13 (204.63–1158.84)	388.07–747.78
β-galactosidase	11.39 (4.06–18.67)	8.29–14.89
GCase	6.52 (1.46–15.20)	4.06–7.86
Cathepsin D	516.85 (324.76–776.65)	426.93–595.62
Cathepsin E	14.54 (5.24–33.17)	10.49–18.24
β-hexosaminidase	3811.63 (1745.40–6919.98)	2980.07–4614.60

Median, ranges, 25-75% percentiles are reported of the enzymatic activities tested in fresh CSF for all the patients included in the study (n = 28). Enzyme activity was measured within 30 minutes from the lumbar puncture.