[COMPARISON OF QuantiFERON® TB GOLD TEST RESULTS BEFORE AND AFTER ENDOTOXIN CONTAMINATION].

Differences in QFT-3G test results were found to be related to a difference in blood collection before or after endotoxin contamination of blood collection tubes. Values resulting from QFT-3G testing were lower in blood samples that were collected after the contamination relative to those collected before the contamination.