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Calcium assay

Product Method Size Catalog Price Quantity
Calcium assay Arsenazo 4 x 68ml CA8021 $615.73
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  • Format
    Liquid ready-to-use
  • Assay Range
    Serum (0.13 - 4.54mmol/l), Urine (0.28 - 6.09mmol/l)
  • Working Stability 2-8 °C
    Stable to expiry
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Intended Use

A calcium test system is a device intended for the quantitative in vitro determination of calcium concentration in serum, plasma and urine. This product is suitable for use on RX series analyser, RX modena.

Clinical Significance

Calcium is the most abundant mineral element in the body with about 99% in the bones primarily as hydroxyapatite. The remaining calcium is distributed between the various tissues and extracellular fluids. Calcium is involved in blood coagulation, neuromuscular conduction, excitability of skeletal and cardiac muscle and enzyme activation.

Serum calcium levels are believed to be controlled by parathyroid hormone and vitamin D. An imbalance in any of these modulators can lead to alterations of the body and serum calcium levels. Increases in serum PTH or vitamin D are usually associated with hyperkalaemia, which may lead to multiple myeloma and other neoplastic diseases. Hypocalcaemia may be observed in hypoparathyroidism, nephrosis and pancreatitis.


Arsenazo III specifically binds to calcium forming a coloured complex at 660 nm. The amount of calcium present in the sample is directly proportional to the intensity of the coloured complex formed.

Available Applications

RX Modena