๐Ÿ—‚ ็ธฝ็›ฎ้Œ„ ๏ฝœ ๐Ÿ“– ่‹ฑๆ–‡ๅŽŸๆ–‡๏ผˆๆœฌ็ฏ‡๏ผ‰ ๏ฝœ ๐Ÿ“ ๅฎŒๆ•ด็ฟป่ญฏ ๏ฝœ โญ ็ฒพ่ฏ็ญ†่จ˜

Vasculitis

Vasculitis

In the case of suspected vasculitis, biopsies for H&E should be taken from a wellestablished purpuric lesion (at least 72 hours old), while biopsies for DIF should be taken from an acute lesion (<24 hours old). IgA vasculitis is more likely to retain positive DIF findings in established lesions, when compared with other forms of vasculitis.