How does ceftriaxone sodium skin try

The most commonly used site of ceftriaxone sodium skin test is the curved side of the forearm, so the skin is smooth and delicate, and it is convenient for test operation and observation of results. According to normal practice, one side of the left and right arms for the test, the other side for the control. Upper arm or back skin can also be used when needed. Intracercutaneous test, prickle test and patchtest can be classified into prickle test, prickle test and prickle test. 1. In intradermal test, 0.0 ~ 20.03ml of test antigen and control solution were injected intradermal (not subcutaneous) with a skin test needle to produce a circular mound locally. When multiple antigens are tested at the same time, they should be spaced at least 4cm apart from each other so as not to confuse the results with each other in the case of strong reactions. The sensitivity of intradermal tests is higher than that of other skin tests. The antigens used should be diluted appropriately to avoid serious reactions. When the highly suspicious antigen has a negative result, the antigen concentration should be gradually increased to repeat the test. Intradermal test is the most commonly used skin test, the application range is also very wide, almost all kinds of antigen and each type of reaction can be used to determine the intradermal test, but the time of observation results of different types of reaction and the standard of judgment results are not different. 2. The prick test is also called the prick test or puncture test. Drop the test antigen and the control solution on the skin of the test site, and prick the skin gently with the tip of a needle through the drops or to Pierce the skin without bleeding. After 1min, the antigen solution was swabbed (aspirated). At the same time when testing swollen antigen, do not pay attention to the cross mixing of different anti-raw fluid, so as not to appear false positive. This method is less sensitive than intradermal test, but has fewer false positives, and has strong correlation with clinical and other tests. Scratchtest is a variant of the scratchtest, in which one or more 1cm long scratches are made on the skin with a triangulated needle or syringe needle. Because the severity and length of scratches is difficult to grasp the same, it is not commonly used. 3. Patch test a method in which test antigens are applied directly to the skin surface. When the test antigen is ointment, it can be directly smeared on the skin. Such as solid can be mixed with distilled water or soaked after coated on the skin; If it is an aqueous solution, wet the gauze and apply it to the skin. The concentration of antigen used should not irritate the skin, and the range of application should be 0.5 ~ 1cm. Apply the back cover with oil paper or cellophane, fixed with gauze or bandage; If there is obvious discomfort can be opened at any time to view, and appropriate treatment

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