[False-positive interferon-gamma test?].
M. tuberculosis specific interferon-gamma tests have been established lately as an important additional instrument in the diagnosis of the latent tuberculosis infection (LTBI). In several studies these tests had a higher specificity compared to the tuberculin skin test (TST). In this report we describe the case of a woman without increased risk for LTBI and with discordant results for the interferon-gamma tests QuantiFERON-TB Gold In-Tube and T-SPOT.TB and for the TST. The findings suggest repeated false-positive results of the QuantiFERON-TB Gold In-Tube test.
Priwitzer
M
M
Landeshauptstadt Stuttgart, Gesundheitsamt, Stuttgart. martin.priwitzer@stuttgart.de
Unger
C
C
Spieth
F
F
Klittich
G
G
D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007371:Interferon-gamma / Q000032:analysis*; D008875:Middle Aged; D012882:Skin Tests; D014374:Tuberculin Test / Q000379:methods*; D014376:Tuberculosis / Q000175:diagnosis*
D007371:Interferon-gamma