A chloride of 108 is not considered abnormal. Five percent plus/minus of the either side of the range does not point to any significant problem, especially if rest of the investigations or electrolytes are normal.
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The electrolytes (sodium=Na, potassium=K, chloride=Cl) usually are indicative of kidney function tests. They may also get slightly affected with blood and body fluids pH (acidity or alkalinity), or lung functions.
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