Long Covid continues to evade clear diagnostic testing, as researchers from the National Institute of Health’s RECOVER Initiative revealed in a study published in the Annals of Internal Medicine. Despite examining data from over 10,000 patients across 83 clinical sites, the study found no significant differences in routine lab results between those suffering from long Covid and those without the condition. This outcome underscores the challenges in diagnosing Long Covid, a condition estimated to affect around 17 million Americans. The study diagnosed Long Covid based on a scoring system of 12 …