the red circle is NOT raised or blistered though. does this mean the test is positive??
2007-01-17 13:38:40 · 10 answers · asked by candipie06 1 in Health ➔ Diseases & Conditions ➔ Infectious Diseases
I am a nursing student and I am required to have a 2 step PPD annually. For me, the injection site looks normal until 48 hours later and it turns into a red circle as you mentioned. The site was not raised or hardened so it was deemed negative.
You should be fine.. as long as the person who is reading your PPD is not a complete idiot it will be interpreted as negative. My personal physician once read my PPD as positive because my skin turned red and made me get a chest Xray to further diagnose. I was so angry because I have had countless numbers of TB tests and always had the same reaction which were always read as negative.
You may just have an allergic reaction to the protein derivative. Don't worry :)
2007-01-17 16:48:56 · answer #1 · answered by ? 3 · 0⤊ 0⤋
the TB test needs to wait and be read between 48 and 72 hours. Then they measure the induration, or bump. Not the redness. Resist touching/scratching it or you could give yourself a false positive. Remember that this is a screening tool not a diagnostic test.
Also important.... Where did you grow up? As lots of countries use the BCG vaccine and that will give you a positive TB skin test which it's supposed to do.
2007-01-17 16:01:09 · answer #2 · answered by Aine 3 · 1⤊ 0⤋
I read TB skin tests and redness has nothing to do with a positive reading. I "bump" is a positive test (larger than 10mm for a healthy person) and these are only read after 48-72 hours. dont worry. And even positive tests require chest xrays to acutally diagnose tb
2007-01-17 15:13:39 · answer #3 · answered by Anonymous · 0⤊ 0⤋
There are False Positives in these tests. You may be allergic to the test solution. They will do a chest X ray to see if you really have TB.
2007-01-17 13:42:17 · answer #4 · answered by Brian 2 · 0⤊ 0⤋
No. Positive is read at 48 hours and consists of a raised area (redness is optional)
2007-01-17 13:41:26 · answer #5 · answered by ignoramus 7 · 1⤊ 0⤋
Not necessarily. It may be a skin reaction or the way it was done.(I've had many a nurse have to stick me more than once because they suck at doing it.
BUT make sure you keep your appointment to get the test read. Don't Panic!!!
2007-01-17 15:00:15 · answer #6 · answered by papi860 2 · 0⤊ 0⤋
You need to wait for the time to pass before the test is run. This may just be a normal reaction to being stuck.
2007-01-17 13:41:46 · answer #7 · answered by kny390 6 · 0⤊ 0⤋
No, not necessarily. Mine does that every time I am tested, but it isn't raised and doesn't itch. You should be fine, but they will tell you when they check it.
2007-01-17 13:42:36 · answer #8 · answered by dragonkisses 5 · 0⤊ 0⤋
no, dont worry same thing happend to me.
2007-01-17 13:43:26 · answer #9 · answered by mark r 2 · 0⤊ 0⤋
your fine this is normal!
2007-01-17 13:46:54 · answer #10 · answered by lil mami 4 · 0⤊ 0⤋