Looking at finger blood vessels with a microscope generally refers to nail fold microcirculation testing, the results of which can reflect the level of microcirculation and is relatively accurate.
Nail fold microcirculation test refers to the method of using a microscope to examine the capillaries in the skin folds at the root of the nails, which can assess the state of microcirculation, and is mainly used for the early diagnosis and prognosis assessment of rheumatic diseases as well as cardiovascular diseases, such as hypertension, coronary heart disease, etc. However, this test is only an auxiliary assessment tool, and should not be relied upon solely for diagnosis and disease assessment. However, this test is only an auxiliary means of assessment, and diagnosis and condition assessment cannot rely on this test alone.
The nail fold microcirculation test needs to be operated by a professional doctor, avoiding strenuous exercise one hour before the test, resting for 15-30 minutes before the test, and avoiding smoking and washing hands one hour before the test.