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The diagnostic process typically involves: Clinical history taking, focusing on symptoms (fatigue, neurological changes, dietary habits) Physical examination for signs of anaemia or neurological impairment Blood tests including full blood count, serum B12, and often folate levels Additional investigations such as intrinsic factor antibodies or parietal cell antibodies if pernicious anaemia is suspected For borderline results, additional tests like holotranscobalamin (active B12) may be considered NICE guidance recommends that treatment should commence based on clinical presentation if neurological symptoms are present, without waiting for laboratory confirmation, as delays can result in irreversible nerve damage
How Side Effects Compare to Other GLP-1 Drugs Network meta-analyses show retatrutide carries a higher overall adverse event risk than GLP-1 monotherapy or dual agonists, driven primarily by GI events and vomiting
While the first clinical trial of semaglutide showed encouraging results over nine weeks, including reduced cravings and changes in how much alcohol participants consumed, the findings remain preliminary
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