All tests · Arterial Blood Gas (ABG) · Base Excess

Above the range

What causes a high Base Excess?

Normal range -2-2 mEq/L (-2-2 mmol/L SI). Specimen: Arterial blood (calculated). See the full Base Excess reference page for critical values and nursing considerations.

What is the normal range for Base Excess?

The standard teaching reference range for Base Excess is -2-2 mEq/L in conventional units, or -2-2 mmol/L in SI units. This value is measured in arterial blood (calculated).

Base Excess reference range and specimen details
SpecimenArterial blood (calculated)
Conventional range-2-2 mEq/L
SI range-2-2 mmol/L
PanelArterial Blood Gas (ABG)

Full details, including nursing considerations, on the Base Excess normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.

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