Table 2.

Clinical chemistry values in patients with HPP.

Patient ID	Case 1	Case 2	Case 3	Case 4	Case 5	Case 6	Case 7	Case 8	Case 9
Age (y)/M or F	35 M	70 F	32 M	58 F	62 F	63 F	50 F	60 F	59 F
Calcium [8.3–10.6 mg/dL]	9.6	10.2	9.8	10.1	10.3	10.0	9.6	10.4	10.0
Phosphorus [2.2–5.1 mg/dL]	4.4	5	5.1	5.1	4.8	5.5	5.1	5.4	4.5
Alk Phosa	17	< 18	20	< 18	33	24	< 18	< 18	< 18
PTH [11–72 pg/mL]	25	19	nm	31	34	33	42	35	24
25-OH vitD [12–50 ng/mL]	24	67.4	20	47.2	34	37	32.9	31.1	27.6
PLP [5–50 ng/mL]	112	577	163	90.3	249.5	474	508	267	288.8

Alk phos, alkaline phosphatase; F, female; M, male; PTH, parathyroid hormone; 25-OH vitD, 25-hydroxy vitamin D; PLP, pyridoxal-5′-phosphate; nm, not measured; y, years. Values in brackets [] are reference ranges.

^aAlk phos reference ranges: women, 50–70 y: 35–123 U/L; men, 18–50 y: 31–129 U/L.