Dual-Antigen System Allows Elimination of False Positive Results in COVID-19 Serological Testing

Hydatid false positive serological test results in malignancy.

1197 The mechanism for the air in the mediastinum is suggested as being due to rupture of marginal pulmonary alveoli, allowing the development of pulmonary interstitial emphysema. This then tracks through the fascial planes at the lung hilum, and from there into the mediasti-num and neck. There was no obvious underlying lung disease in our patient, and no further investigations were indicated. ...

HIV false positive results and Flu vaccination

Abstract False positive results are the major problem influencing interpretation of Clinical Laboratory test. They are originated mostly in the other diseases, technical errors and the recent vaccination. The problem has been presented since 1991 is positive HIV test after influenza Vaccination (1). The False positive has been reported in Cases using Eliza, one of The most common test to screen...

Defective antigen tubes generate false-positive QuantiFERON tuberculosis test results.

TO THE EDITOR—In recent years a significant shift in testing has occurred for diagnosing latent tuberculosis (LTB). The adoption of interferon gamma release assays (IGRA) has largely supplanted tuberculin skin test (TST) for both patient testing and employee screening. IGRA have advantages over TST in that they are unaffected by prior vaccination with bacillus Calmette–Guérin (BCG) vaccine and ...

COVID-19 in Nursing Homes: The Problematic Management of Residents Without Positive COVID-19 RT-PCR

Repeated tuberculin testing does not induce false positive ELISPOT results

The Enzyme Linked ImmunoSpot (ELISPOT) is a new rapid T cell based blood test (otherwise known as an interferon-c assay) for the diagnosis of latent tuberculosis infection. The commercially available form of the assay, T-SPOTH TB (Oxford Immunotec, Abingdon, UK) has European regulatory approval as an in vitro diagnostic test and is increasingly being used in clinical practice. The test is based...