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A member asked:
I might have a kidney stone (painful in rear flank). one of the tests he ordered was anion gap. it came back elevated. should i be concerned?
2 doctors weighed in across 2 answers
How elevated. All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Talk to the doctor who ordered the tests. Having said that, anion gap is not a relevant test for kidney stone. You may wish to consult a urologist. Wish you good health!
Answered 4/17/2022
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Was the CT done to confirm the diagnosis of kidney stone (nephrolithiasis)? High anion gap may be present in many conditions which may have nothing to do with nephrolithiasis. The most common cause of high anion gap is metabolic acidosis due to advanced chronic kidney disease.
Answered 4/18/2022
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