I am 6 mos post gastric bypass wit hthe following blood resultsLow MCHC, High MPV and low absolute lymphocytes.  Low Vitamin D (I am chronically low here and have been always)My blood work also showed Hyperparathyroidism.  High Sodium High chloride, Low Creatinine  What does this all mean for me
With a history of post gastric bypass, nutritional deficiencies due to iron and calcium are fairly common. Iron deficiency is causing a low MCHC. Your MCV and MCH must also be on the lower side. To confirm that it is iron deficiency, a serum iron test would be helpful.MPV means platelet volume, and has no relation with your clinical history. As long as your platelet counts are normal, I am not bothered about High MPV. Please check your platelet counts and confirm. Low absolute lymphocytes - You would need to give me your exact total WBC counts and differential counts, before I comment on this.- Calcium deficiency and electrolytes imbalance is common in gastric bypass patients. Calcium deficiency causes hyperparathyroidism. What are your serum total and ionized calcium levels ? - Creatinine is generally related to your muscle mass and is excreted by kidneys. Again this has no correlation with your medical history. Please mention other findings in your kidney profile, for further comments.