Table 2 Investigation results of hypercalcaemia evaluation

Serum 25-hydroxycholecalciferol (ng/ml)

9

 < 20 — deficient

20–30 — insufficiency

30–100 — sufficiency

Serum PTH (pg/ml)

24.1

15–68

Serum calcium (on the day of PTH assay) (mg/dl)

11.9

8.4–10.2

Serum PO₄³⁻ (on the day of PTH assay) (mg/dl)

4.3

2.3–4.7

ALP (U/l)

49

40–150

ESR (mm/1st hour)

141

Serum protein electrophoresis

No abnormal monoclonal band

Skeletal survey

No lytic lesions

Ultrasound of parathyroid glands

No features suggestive of parathyroid gland enlargement

TSH (mU/l)

2.79

0.35–4.94

T4 (ng/dl)

0.82

0.7–2.0

9 am cortisol (nmol/l)

356 nmol/l

138–635