Biochemical results at presentation
| All | Tetany | Pains | Weakness | Deformities | ||
|---|---|---|---|---|---|---|
| Serum parameter | Normal values | n = 21 | n = 12 | n = 6 | n = 1 | n = 2 |
| Calcium (mmol/l) | 2.2–2.7 | 1.62 (0.3) | 1.45 (0.1) | 1.9 (0.2) | 1.5 (0) | 1.8 (0.1) |
| Phosphorus (mmol/l) | 1.1–1.8 | 1.2 (0.4) | 1.4 (0.2) | 0.9 (0.4) | 0.9 (0) | 0.8 (0.2) |
| Ca × P product (mmol2/l2) | 3.3 | 1.8 (0.1) | 1.9 (0.1) | 1.8 (0.3) | 1.4 (0) | 1.5 (0.4) |
| Parathormone (pmol/l) | 1.0–5.2 | 35 (3.6) | 35 (3.6) | NA | NA | NA |
| Alkaline phosphatase (U/l) | 80–280 | 818 (440) | 628 (380) | 986 (506) | 1250 (0) | 1199 (338) |
| 25-hydroxyvitamin D (nmol/l) | 10–80 | 5.8 (3.8) | 4.6 (2.4) | 5.2 (0) | NA | NA |
| 1,25-hydroxyvitamin D (pmol/l) | 38–150 | 170 (70) | 141 (33) | 286 (0) | NA | NA |
Values expressed as mean (SD).