体检如何避坑？这三大误区你一定要知道！

Group 1 - The article highlights common misconceptions about health check-ups, urging the public to avoid unnecessary expenses and misleading recommendations from health institutions [1] - It emphasizes that PET-CT is not a suitable health screening tool and should only be used for further examination after a disease has been identified [4][6] - The article points out that claims of using bioelectricity to detect numerous diseases are unfounded and not clinically supported [8][10] Group 2 - It advises against routine testing of trace elements for healthy individuals, as such tests can be inaccurate and costly without a specific medical need [12][14] - The article stresses that the accuracy of trace element testing is influenced by various factors and requires specialized equipment, making it unnecessary for those without clear health concerns [14]