calcium malabsorption that does not resolve with supplementation

[Allias]

Hello, I have chronic malabsorption of calcium, iron and vitamin B9 linked to celiac disease. I manage to compensate for the deficiencies thanks to iron and vitamin B9 supplements but not calcium (I have tried a lot of calcium supplements and different easily absorbable forms of calcium citrate, calcium chloride, calcium bisglycinate, etc.). Symptomatically, I have the typical symptoms of a calcium deficiency (neck spasms, neuropathy, etc.). Biologically, I have high PTH, low ionized calcium levels, normal total calcium levels, normal vitamin D levels, and normal calcitriol (active form of vitamin D), normal magnesium levels, high alkaline phosphatase levels. I am coming to you because I cannot find a solution. Can ferritin, which is not in the optimal levels, hinder calcium absorption? Because I noticed that in my blood tests from when I was as a teenager when my ferritin was below 100 there was a high level of alkaline phosphatase. or maybe the gene that codes the protein transporting calcium is defective linked to an iron deficiency. I also thought it was linked to the malabsorption of fatty acids which chelated calcium in the intestine so I tried not eating anything for 2 days then taking calcium supplements but it didn't work. Thank you in advance for your answers.

[trents]

Welcome to the forum, @Allias!

May we assume you have been officially diagnosed with celiac disease? You do not address this at all but I assume you are a celiac since you are posting on a forum dedicated to that medical condition. Or, perhaps you are investigating the possibility of celiac disease as the reason for your poor calcium, folate, and iron absorption?

High Alkaline Phosphatase levels point to liver or bone disorders. Elevated liver enzymes are a common symptoms of celiac diease and, in fact, was what led to my own diagnosis of celaic disease over 20 years ago.