Hypercalcaemia Profile

LABOKLIN Service ID: 666

The profile supports a structured, pathophysiologically based investigation of disorders of calcium and phosphate metabolism.

Material

serum 1 ml and EDTA plasma 1 ml (centrifuged shortly after coagulation (serum) or immediately after collection (plasma), pipetted and at least refrigerated – preferably frozen)

Parameter

parathormone (PTH), parathormone (rP), vitamin D (25OH), calcium, phosphate

Species list

dog, cat

Remark

  • The PTH concentration should be assessed in relation to calcium/ionised Calcium (+ phosphate if applicable).
  • In cases of hypercalcaemia, a PTH concentration that is within or exceeds the reference range should be considered inadequately elevated. Secondary renal hyperparathyroidism should be ruled out.
  • Parathormone (rP) supports the identification of paraneoplastic hypercalcaemia (e.g. lymphoma, anal sac carcinoma in dogs).
  • Phosphate and vitamin D (25OH) are used to differentiate between secondary renal hyperparathyroidism and vitamin D-induced hypercalcaemia.
  • In cats, idiopathic hypercalcaemia is the most common form; it is less common as a secondary consequence of chronic kidney disease (CKD).
  • The Hypercalcaemia Profile and Calcium Ionized can be requested together via test number 667. In this case, a serum or heparin plasma tube collected under air exclusion is also to be sent.