TB skin test, no bleb
- 0Will a positive TB skin test result still show up, if there is no "bleb" evident when the test is performed? As in, that antibody is injected under the skin but perhaps a little deeper than that first layer, and no "bleb" comes up. Thanks! (I did "google" this but couldn't find anything..) Thank you.
- 0Jan 14, '06 by VivaLasViejas, ASN, RN GuideI hate to tell you this, but you need to have that TB test done again. I've done literally hundreds of these, and I learned early on that the test had to be repeated if I accidentally injected too deep, because it could result in a false negative.
Naturally, the folks I was doing the test on were not too happy when that happened, so I worked on perfecting my technique until I could produce a bleb in my sleep........but that's another story.
- 0Jan 14, '06 by EricJRNIn its 'Guide for Primary Health Care Providers: Targeted Tuberculin Testing and Treatment of Latent Tuberculosis Infection 2005', the CDC recommends repeating the test on the other arm or at least 2 inches away from the first site IF no wheal forms or if the initial wheal is less than 6 mm in diameter.
- 0Thanks you all... this is a mistake I made so I guess I will have to do another test on this kid, I thought it would be OK. That nurse is going to hate me calling to tell her that!!! I am so stupid. I guess I should have re-done the test right away. Well I guess I can make amends now.
Edit: Well I just called... he is in surgery but his nurse will check his arm when he gets back... she was very nice about it even though I felt so stupid!!!
See, I did it in the early morning and didn't want to turn on the light to bother him... no more of that!!! I hope she does not have to do another one on top of a busy day.
Now I can't sleep... I'm on call tonight too and we are short so I'll probably be going in. THANK YOU sooo much for your verry quick replies!!! This is a wonderful website.Last edit by perfectbluebuildings on Jan 14, '06