Magnesium Reagent Kit (Xylidyl Blue)

Xylidyl blue reagent for quantitative magnesium in serum.

Method: Xylidyl blue
Sample: Serum free of haemolysis
Linear up to 5.0 mg/dL
Liquid stable, ready to use pack
Reads at 520 nm

For in vitro diagnostic use by laboratory and healthcare professionals only. Please refer to the instructions for use supplied with each product for complete protocol and performance details.

Overview

For in vitro quantitative determination of magnesium concentration in serum. Principle: At alkaline pH, magnesium reacts with xylidyl blue to form a red chelate; the increase in red (or decrease in blue) colour is proportional to magnesium concentration. If magnesium exceeds 5 mg/dL, dilute the sample, re-assay and multiply by the dilution factor.

Intended use: For in vitro quantitative determination of magnesium concentration in serum.

Specifications

Specifications for Magnesium Reagent Kit (Xylidyl Blue)
Shelf life	12 months
Storage	2–8 °C, protected from light
Method	Xylidyl blue
Sample type	Serum free of haemolysis
Wavelength	520 nm
Reaction type	End point
Reagent volume	1 mL
Sample volume	10 µL
Incubation	5 minutes
Reaction temperature	37 °C
Light path	1 cm
Standard	2.5 mg/dL
Linearity	5.0 mg/dL
Reagent composition	Reagent 1: xylidyl blue reagent; magnesium standard 2.5 mg/dL
Reference interval	Serum: 1.9–2.5 mg/dL Reference intervals are indicative; each laboratory should establish its own (see the kit insert).