Table 1.

Serum biochemistry and urine dipstick results of the three cases

	Case 1	Case 2	Case 3	Normal range
Serum biochemistry
Alkaline Phosphatase	3726	Not recorded	2602	40–150 iu/L
Bicarbonate	19	20	Not recorded	22–30 mmol/L
(Adjusted) calcium	2.11	2.65	2.16	2.20–2.60 mmol/L
Parathyroid hormone	4.7	2.8	5.3	1.5–7.6 mmol/L
Phosphate	0.38	0.47	0.51	1.05–1.80 mmol/L
Potassium	3.7	3.1	3.3	3.5–5.0 mmol/L
Sodium	147	136	135	135–145 mmol/L
Urea	8.0	6.6	5.6	2.5–7.0 mmol/L
Urine dipstick
pH	6.0	8.0	Not recorded	4.5–8.0
Blood	Negative	+	++	Negative
Glucose	+++	++	++	Negative
Ketoacids	++	Negative	Negative	Negative
Leucocytes	Negative	+	Negative	Negative
Protein	++	++	+++	Negative