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some basic norms(expect there to be some interlab variation)
Fe: 50 to 170 g/dL for women
% sat: 20-50%
ferritin: 15-200 ng/mL for women

realize that ferritin a surrogate for total body iron stores, not a direct measure of total body stores(serum iron is not a great measure for total body iron .. much of your iron trapped in your liver/spleen/bone marrow can not be directly measured .. the gold standard for determining iron stores for red blood cell synthesis is a bone marrow biospy with prussian blue staining for iron) ... ferritin is an iron-storage protein that the body synthesizes because in reality free iron is actually toxic to cells ... so to prevent iron toxicity the body regulates level of ferritin synthesis to accomodate various levels of iron .. when you total body iron is high ferritin tends to be high and if total iron body is low, ferritin tends to be low, as a side note, iron deficient patients tend to have ferritin less than 10-12 ... ferritin can be confusing in the setting of inflammation, as it is an acute phase reactant, and can be elevated even in the setting of an iron deficiency anemia ... so if you had an infection in the setting of iron deficiency anemia you could still be iron deficient even with a super high ferritin, even not that acute malnourishment can lead to elevated ferritin levels

in your case you have a good reason for iron deficiency anemia as you have celiac dx and iron malabsorption is not uncommon as iron is absorbed in the duodenum(1st segment of small intestine) and the upper part of the jejunum(2nd segment of small intestine), you should also have your folic acid level checked as that is also commonly malabsorbed in celiac and so is B12 but to a lesser extent ... but you being a women and if your still menstruating is also a risk for iron deficiency anemia

in terms of your other labs, your calcium being low(normal approx 9-10.5 mg/dL) is difficult to interpret without an albumin level ... just so you know a percentage of your calcium is carried on a blood protein called albumin, so if your albumin is low then your total calcium is lowered ... in the case of celiac, there is very likely a degree of hypoalbuminemia(low albumin, usually related to nutritional deficiency) ... so I would either need to know your albumin level or you ionized calcium level(a measure of calcium unaffected by albumin level variation) ... other factors like vit D, magnesium levels, etc affect calcium levels but you may actually be normal

in terms of your potassium, it is high, but I would need to know if your blood sample was hemolyzed(meaning your red blood cells for that specific sample, were found to be broken open -- this is a common phenomenon which happens with sample draws -- and also so you know your electrolytes like calcium/potassium/etc are drawn into a different tube than your CBC), celiac'rs are often hypokalemic(low potassium) ... but if your sample was not hemolyzed and thus not thought to be a relative lab error than you should have a repeat potassium checked relatively soon as hyperkalemia(high potassium) is a risk factor for sudden cardiac death secondary to arrhythmia(it causes peaked T waves and then QRS prolongation transition to sinusoidal EKG's and then usually cardiac arrest) ... as for the causes of high potassium, there are many such as meds, renal failure, etc

hope this helps and best of luck

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