Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: 48 year old female 54 normal weight female. Went to the ER for chest pains on the left side that were consistent for about two months and have since subsided in the ER had a normal chest CAT scan with contrast. Low anion Gap. I was just looking back at bloodwork from ER visit in December and noticed Anion Gap was 1/mol/L but Albumin was normal 3.9 and total protein normal 7.2. The Dr didn't mention this to me. And just saw this now. So worried about Multiple Myeloma now. My sodium was low 131 and SGPT (ALT) was low 12. The only thing they mentioned was elevated Hgb 15.5 and Het 46.3% but said nothing to worry about. Can anyone give their opinion. Ive also been to the gastroenterologist and cardiologist, upper endoscopy and colonoscopy normal and all cardiology tests were clear just showed some palpitations upon exertion.. ### Response: Multiple myeloma usually has high calcium, kidney disease, anemia (low blood count) and bone disease. You mentioned none of those. Low anion gap is hardly used in the emergency setting, and usually will need retesting if blood to see if it was a one time occurrence..