Tuberculin in diagnosis and treatment . nt of theneedle should not be too long. With a little care in keeping theneedle sharp, the injections can be made entirely painlessly,especially if the needle be inserted and withdrawn quickly. Time of Day of Injection.—The time of day for the injection 170 TUBERCULIN IN DIAGNOSIS AND TREATMENT. does not make very much difference. Some prefer the morn-ing, some prefer the afternoon, and some the evening. Any timewill do if the proper allowance is made. Those who give theirdose in the evening prefer it because the patient will go to bedand rest during the
Tuberculin in diagnosis and treatment . nt of theneedle should not be too long. With a little care in keeping theneedle sharp, the injections can be made entirely painlessly,especially if the needle be inserted and withdrawn quickly. Time of Day of Injection.—The time of day for the injection 170 TUBERCULIN IN DIAGNOSIS AND TREATMENT. does not make very much difference. Some prefer the morn-ing, some prefer the afternoon, and some the evening. Any timewill do if the proper allowance is made. Those who give theirdose in the evening prefer it because the patient will go to bedand rest during the hours that the reaction might come on, prob-ably saving themselves reactions, which, at times, might be in-duced by exertion following the dose. Those who prefer givingit in the morning do so because if a reaction does occur it ismore apt to be observed than where the dose is given in the after-noon or at night. The time of reaction, however, differs considerably, accordingto the preparation used. A reaction from human tuberculin is. Fig -Tuberculin tray. more apt to come on early than that from the bovine. Thebovine usually comes the second day if the dose is given in themorning, while the human usually shows itself the first day. Ido not think that the time of day is of sufficient importance tocause the physician or patient to put themselves out in orderto make the injection at a certain time. Tt is largely a matterof convenience. Tuberculin Tray.—Tn an institution it is necessary to havesome convenient way for carrying tuberculin and vaccine tothose who nuist be treated in bed. Fig. 27 sho^vs a tray whichhas been in use at the Pottenger Sanatorium for Diseases of the TECHNIC OP ADMINISTERING TUBERCULIN. 171 Lungs and Throat for several years, and which has proved verysatisfactory. Besides carrying a full set of dilutions of two ormore different tuberculins, there is room for bottles of specialvaccines, old tuberculin for the tuberculin tests, an alcohol lampfor steriliz
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