False Negative Result
Those who are immunologically compromised, especially those with HIV and low CD4 T cell counts, frequently show negative results from the PPD test. Steroid use, malnutrition and sarcoidosis can also lead to false-negative results, because the immune system needs to be functional to mount a response to the protein derivative injected under the skin.
Read more about this topic: Mantoux Test
Famous quotes containing the words false, negative and/or result:
“Description is revelation. It is not
The thing described, nor false facsimile.
It is an artificial thing that exists,
In its own seeming, plainly visible,
Yet not too closely the double of our lives,
Intenser than any actual life could be....”
—Wallace Stevens (1879–1955)
“For those parents from lower-class and minority communities ... [who] have had minimal experience in negotiating dominant, external institutions or have had negative and hostile contact with social service agencies, their initial approaches to the school are often overwhelming and difficult. Not only does the school feel like an alien environment with incomprehensible norms and structures, but the families often do not feel entitled to make demands or force disagreements.”
—Sara Lawrence Lightfoot (20th century)
“That all [Berkeley’s] arguments, though otherwise intended, are, in reality, merely sceptical, appears from this, that they admit of no answer and produce no conviction. Their only effect is to cause that momentary amazement and irresolution and confusion, which is the result of scepticism.”
—David Hume (1711–1776)