My MCV level came back at 100.6. All else was within normal parameters, except for an eGFR of 73 and slightly elevated cholesterol and triglycerides. I am a Caucasian female, 64 years old, with a long history of alcoholism, sober since January 3rd, 2013. Could acetaminophen or OTC doses of codeine contribute to this? Or is this a natural result of years of absurdly abusive drinking?