It comes pre-mixed in 1-gallon pails, so the color and consistency is perfect every time. Coverage with a Â¼ grout line is approximately 50 sq. ft. for a 12 x12 application. See chart for additional information regarding grout coverage per gallon.
In brief: 48 to 72 hours. The actual placement of the TB skin test (PPD) only takes a few seconds and should be painless. However you need to return to the clinic to have the skin test read by someone who knows what they are looking for between 48 and 72 hours later. In brief: 48 to 72 hours.
0. Jul 23, '07 by NBMom1225. I just had the same tests done...you go back to have the TB test checked 24-48 hrs after getting the injection, and the titer results only took 2-3 days to get back. If the TB ends up positive, it's my understanding that you then have a chest x-ray, I assume to look for active TB. If the titers come back negative for immunity, it's just a matter of getting a booster shot.:spin: # 1 1.