U.S. doctors online nowAsk doctors free
Kalamazoo, MI
A 32-year-old male asked:

had blood work done and anion gap is 18. is this high? the lab defines this in normal range. is it? why do different labs have different normal ranges? if high what should i be looking for?

2 doctor answers2 doctors weighed in
Dr. Atul Singh
Nephrology and Dialysis 28 years experience
AG: 18 is high. Normal AG is 10-12, it is your measured albumin times 3. What was your bicarbonate (sodium bicarbonate) ? Do you have a medical history of any illness. If not then this can be a processing error and you may need a fresh sample drawn. Suggest look at the whole lab and discuss with the MD that ordered it. If you have no medical issues simply rpt it.
Dr. Gurmukh Singh
Pathology 49 years experience
See below: Do you have any symptoms? Why was the test done? 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. Having said that, it would have helped to have all the results from the tests. Different testing methods do give different results, that is why each lab reports it reference range.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month
Last updated Apr 23, 2018

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.