This Celiac.com FAQ on celiac disease will guide you to all of the basic information you will need to know about the disease, its diagnosis, testing methods, a gluten-free diet, etc.
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What are the major symptoms of celiac disease?
Celiac Disease Symptoms
What testing is available for celiac disease? - list blood tests, endo with biopsy, genetic test and enterolab (not diagnostic)
Celiac Disease Screening
Interpretation of Celiac Disease Blood Test Results
Can I be tested even though I am eating gluten free?
How long must gluten be taken for the serological tests to be meaningful?
The Gluten-Free Diet 101 - A Beginner's Guide to Going Gluten-Free
Is celiac inherited? Should my children be tested?
Ten Facts About Celiac Disease Genetic Testing
Is there a link between celiac and other autoimmune diseases?
Celiac Disease Research: Associated Diseases and Disorders
Is there a list of gluten foods to avoid?
Unsafe Gluten-Free Food List (Unsafe Ingredients)
Is there a list of gluten free foods?
Safe Gluten-Free Food List (Safe Ingredients)
Gluten-Free Alcoholic Beverages
Distilled Spirits (Grain Alcohols) and Vinegar: Are they Gluten-Free?
Where does gluten hide?
Additional Things to Beware of to Maintain a 100% Gluten-Free Diet
Where can I buy gluten-free stuff?
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The sluggishness, hair loss, and weight gain made me think of hypothyroidism, but then the diarrhea throws me - unless the two things are unrelated. Coincidental but unrelated.
I looked up positive lactoferrin test on labsonline: Lactoferrin is a stool (fecal) test that is used to detect inflammation in the intestines. Intestinal inflammation is associated with, for example, some bacterial infections and, in people with inflammatory bowel disease (IBD), it is associated with disease activity and severity. The test may be ordered to distinguish between IBD and non-inflammatory disorders and to monitor IBD disease activity.
Also the bands refers, if I'm not mistaken, to neutrofils and as others have said, usually this means that there is an infection or inflammation present and the bone marrow is producing more WBCs and releasing them into the blood before they are fully mature.
I'm sure you would have mentioned medications you were taking if you or a medical provider thought they may be affecting you negatively.
Let us know if there is anything else we can do. You have a lot of people here ready to help.
ETA: I see the doctor chalked something up to your occasional use of ibuprofen. Sorry, I could not figure that one out, and how it had much to do with your symptoms.
They are N/A because they were not tested for on those dates. Also, I have never been on thyroid medication so I can rule that possibility out. Is it possible that TSH fluctuates before hypo presents itself? It has been 4 months since my last test and a few symptoms that I thought would resolve themselves by now on my gluten-free diet have persisted which is making me question these thyroid numbers further.