This product is a staining kit for bone-related cells. Chromogenic substrates for alkaline phosphatase, an enzyme marker of osteoblasts, and tartrate-resistant acid phosphatase, an enzyme marker of osteoclasts, are combined with a reagent for nuclear staining that provides visualization of multinucleated osteoclasts. Both acid and alkaline phosphatase activities in the cells can be stained simultaneously for comparison. Moreover, as the substrates are provided as premixed reagents, the substrate solutions can be easily prepared.

TRACP & ALP Assay Kit allows for simultaneous detection of 2 enzymes which are involved in bone metabolism. TRACP which is an osteoclast enzyme marker and ALP an osteoblast enzyme marker. TRACP & ALP Assay Kit has been designed for simple and quick detection of ACP (Acid phosphatase) and ALP (Alkaline phosphatase) through the use of pNPP (p-nitro-phenyl phosphate) substrate. The addition of tartaric acid into the ACP assay, allows for the detection of TRACP (tartrate-resistant acid phosphatase) activity. Since this kit utilizes an aqueous substrate, it enables quick activity quantification by measuring the absorbance of the reactant. In addition to this kit, TRACP & ALP double-staining Kit (Cat. #MK300) is also available using a non-soluble substrate. The appropriate kit can be selected depending on assay interest.