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To evaluate electrolytes, acid-base balance, and hydration level.
Serum collected in a gold-, red-, or red/gray-top tube. Plasma collected in a green-top (heparin) tube is also acceptable.
(Method: Ion-selective electrode)
|Age||Conventional & SI Units|
|Premature||95–110 mEq/L or mmol/L|
|0–1 mo||98–113 mEq/L or mmol/L|
|2 mo–older||adult 97–107 mEq/L or mmol/L|