Additional questioning indicated a history of positive PPD skin test
a year prior without follow-up treatment.
PPD skin test
and serological (antibody detection) test
CSF Gram stain and cultures were negative, as were a chest x-ray and PPD skin test
If lymph node enlargement persists despite antibiotics, yet an infectious or inflammatory cause is still suspected, further evaluation may include a PPD skin test
and chest radiograph (1) (SOR: C, expert opinion).
As with AIDS patients, a 5-mm PPD skin test
is considered positive.
Consider an induration of 15 mm or greater as a positive PPD skin test
in high-risk areas and high-risk populations, he advised.
In addition, positive skin test reactions occur in people who have received BCG vaccine, thus limiting the effectiveness of the PPD skin test
to identify new infections.
Medical records of all patients were analyzed for clinical data such as anemia, fever, weight loss, dyspnea, night sweats, cough, sputum, as well as diagnostic tests such as thoracic X-Ray (XR), computed tomographic (CT) scan of the chest, PPD skin test
, erythrocyte sedimentation rate, and blood counts.
A recently developed alternative is the interferon-gamma assay (QuantiFERON-TB Gold test), which may be used in place of, or in addition to, the PPD skin test
for patients who are known to have received a BCG vaccine (SOR: B, extrapolation from a validation cohort study).
Interpretation of the PPD skin test
in BCG vaccinated children.
The PPD skin test
and controls and the results of the serology for C immitis were negative.
Chest radiographs and PPD skin tests
were performed for 1580 (95.2%) veterans; 1425 veterans had their tests read (155 did not return for reading).