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# How do you calculate the anion gap?

## How do you calculate the anion gap?

Expressed in words, the equation is: Anion Gap = Sodium – (Chloride + Bicarbonate) which is logically equivalent to: Anion Gap = (the most prevalent cation) minus (the sum of the most prevalent anions)

## When do you calculate urine anion gap?

From its introduction in the late 1980s, the urine anion gap (UAG), calculated as [(Na+ + K+) – (Cl−)] has been used to roughly estimate whether urine ammonium is increased or decreased in the evaluation of hyperchloremic metabolic acidosis (1,2).

What is anion gap normal range?

Normal results are 3 to 10 mEq/L, although the normal level may vary from lab to lab. If your results are higher, it may mean that you have metabolic acidosis.

Why do we calculate anion gap?

The anion gap blood test is used to show whether your blood has an imbalance of electrolytes or too much or not enough acid. Too much acid in the blood is called acidosis. If your blood does not have enough acid, you may have a condition called alkalosis.

### Is an anion gap of 7 normal?

The value of the anion gap is reported in milliequivalents per liter (mEq/L). Normal values are 3 to 11 mEq/L [4, 2]. Some older types of tests used different techniques to measure electrolytes, which give different results. The normal range for these older tests is 8 to 16 mEq/L [5, 6, 7].

### Is 13 a high anion gap?

An anion gap number between 3 and 10 is considered normal. But the “normal” range can vary from person to person, and it may also depend on the methods your lab used to do the test.

Is an anion gap of 6 bad?

The normal (physiologic) range of the anion gap was defined as 6-14 mEq/L, and an anion gap >14.1 mEq/L was considered high.

Is 8 anion gap normal?

A generation of clinicians has been taught that the normal anion gap (AG) is 8 to 16 mmol/l.

#### What is normal anion gap acidosis?

Normal anion gap acidosis is an acidosis that is not accompanied by an abnormally increased anion gap. The most common cause of normal anion gap acidosis is diarrhea with a renal tubular acidosis being a distant second.

#### How is anion gap treated?

Treatment is directed at reversing the underlying cause. Hemodialysis is required for renal failure and sometimes for ethylene glycol, methanol and salicylate poisoning. When metabolic acidosis results from loss of bicarbonate, as in normal anion gap acidosis, bicarbonate therapy is usually safe and effective.

Is 14 a high anion gap?

How do you treat high anion gap?

The most common alkalizing agent is sodium bicarbonate, but sodium and potassium citrate are alternative options. In the event of severe, recalcitrant acidosis, it may be appropriate to treat empirically with alcohol dehydrogenase inhibitors (fomepizole or ethanol) and prepare the patient for emergent hemodialysis.

## When to use the urine anion gap calculator?

This urine anion gap calculator can also be used in cases of non gap metabolic acidosis, mixed metabolic acidosis or cases suspected of RTA and can also distinguish between renal or extra renal causes. Non gap metabolic acidosis conditions are known as the HARDUP group:

## How is anion gap used to diagnose metabolic acidosis?

This urine anion gap calculator helps the differential diagnosis of metabolic acidosis and uses the urinary anion gap to determine renal function. Discover more on the three urine electrolytes measured and the UAG interpretation below the form.