I don't know how much the magnesium blood test is - insurance pays for most all my labwork and all I have to pay is the 20% coinsurance...
Yes, heel issues can be from nutritional deficiency...Vitamin B12 helps with bone spurs, magnesium and Vitamin C help with tendon issues, etc. How much Vitamin C are you getting?
I wouldn't avoid magnesium even during treatment...but that's my opinion. There are things one can take to break up the biofilms/cysts, such as grapefruit seed extract, proteolytic enzymes, heparin, etc., so I see no need to completely remove magnesium from one's diet/supplements.
Chronic Lyme Disease, Chronic Bartonella (clinical dx only), Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, chronic Lymphopenia, etc.; G-Tube; Currently weaning off TPN.
Meds: Pulmicort, IV Doxycycline, Heparin (to flush PICC line), Claritin, Singulair, Domperidone, Colloidal Silver (topically & nasally), probiotics, Liver support herbs, Ailanthus, digestive enzymes, homeopathy.