Fig. 4From: Prevalence of low alkaline phosphatase activity in laboratory assessment: Is hypophosphatasia an underdiagnosed disease?Prevalence of elevated PLP levels in subjects with decreased ALP activity. Values of Pyridoxal-5-phosphate in subjects with ALP activity < 30 U/L. PLP values were available in 0.59% (n = 3.447) of subjects with an ALP activity below 30 < U/L including 0.60% (n = 1.643) of male subjects and 0.58% (n = 1.804) of female subjectsBack to article page