Anion Gap
The anion gap is a calculated value that compares the amount of positively charged electrolytes (sodium, potassium) to negatively charged electrolytes (chloride, bicarbonate) in your blood. It helps…
Category: Metabolic Panel
Also known as: anion gap, ag, serum anion gap, anjonski procep
Reference range: 8–12 mEq/L (Source: ABIM)
Standard unit: mEq/L
High values may indicate
A high anion gap may indicate metabolic acidosis, diabetic ketoacidosis, kidney failure, or ingestion of toxic substances such as methanol or ethylene glycol.
Low values may indicate
A low anion gap is uncommon and may indicate hypoalbuminemia (low albumin) or, in rare cases, may be a laboratory error.
Frequently asked questions
- What is a normal Anion Gap level?
- A typical reference range for Anion Gap is 8–12 mEq/L (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Anion Gap measured in?
- Anion Gap is most commonly reported in mEq/L. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Anion Gap reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Anion Gap over time?
- Yes. Upload results from any lab and BloodId charts your Anion Gap over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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