The thread on tests for PA and B12 deficiency mentions other tests that can help to diagnose PA eg gastrin test and others (link in my other reply) When you were tested for coeliac disease
How Trimi's Licensed Provider Review Works This is where a lot of people have the wrong mental model going in, and it's worth setting straight before you start your intake
The benefits of vitamin B12 injections include enhanced energy, improved mood, mental clarity, and stronger immune and metabolic health
Many people will claim that B12 can be obtained naturally through plant-based foods like seaweed, Blue-Green Algae, tempeh, etc., but most of these sources contain B12 analogues, which actually interfere with true B12 absorption (SOURCE)
Table of Contents: Are B12 injections suitable for people with low energy or fatigue
www.fda.gov , Physiology , vol