Magnesium

Ethanolamine pH 11.0 750 mmol/L GEDTA (Glycoletherdiamine-tetraacetic acid) 60 umol/L Xylidyl blue 110 umol/L

Photometric test using xylidyl blue

serum, plasma, cerebrospinal fluid or urine

520 nm, Hg 546 nm, 500 - 550 nm (Increase of absorbance) 628 nm, Hg 623 nm, 570 - 650 nm (Decrease of absorbance)

Against reagent blank

0.4114

Women 1.9-2.5 mg/dL (0.77-1.03 mmol/L) Men 1.8-2.6 mg/dL ( 0.73-1.06 mmol/L)

Urine: 73-122 mg/24 hr (3-5 mmol/24hr) CSF: 2.1-3.3 mg/dL (0.85-1.35 mmol/L)

Magnesium ions form a purple colored complex with xylidyl blue in alkaline solution. In presence of GEDTA, which complexes calcium ions, the reaction is specific. The intensity of the purple color is proportional to the magnesium concentration.

Neuromascular irritability (tremor, seizures) Cardiac symtonps ( tachycardia, arrythmia)

Decreased calcium and potassium levels taking into hypomagnesemia may be primary cause of hypocalcemis

Dehydration Renal disorder After intake of excessive amount od antacids

2-8 degree celcius

Hemoglobin

Parathyroid Hormones Aldosterone and Thyroxine

Colorimetric method Dye Lake Method- Titan Yellow Due Atomic Absorption Spectrophotometry Ion Selective Electrode