Flex test

The Quartet test is a supplementary test used to check whether a vein is normal. There are two tests of the Quartet test, namely the Quartet test Ⅰ and the Quartet test Ⅱ. The difference between the two tests is: Quotient test Ⅰ: Check the function of the great saphenous vein valve. . Through this examination, the corresponding symptoms can be judged.

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