UFHPL Epic order code: LAB103
Container/Tube: Serum gel or heparinized plasma
Sample Volume: Submit full tubes.
Minimum Volume: 0.5 mL serum or plasma
- Send specimens in their original tubes.
- Centrifuge tubes if there is a delay in transport of more than 1 hour.
Storage: Samples are stable for up to 7 days at 2 – 8ºC.
Unacceptable Conditions: Samples with moderate or marked hemolysis will be rejected.
This magnesium procedure utilizes a direct method in which magnesium forms a colored complex with xylidyl blue in a strongly basic solution, where calcium interference is eliminated by glycoletherdiamine-N,N,N",N"-tetraacetic acid (GEDTA). The color produced is measured bichromatically at 520/800 nm and is proportional to the magnesium concentration. (Package Insert, OSR General Chemistry, BAOSR6x89.02, 2012-01)
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