Johnson & Johnson said that it found no trace of asbestos in one lot of baby powder that U.S. health authorities previously said contained traces of the carcinogen.

The health-care and consumer products giant is facing thousands of lawsuits claiming that asbestos in its baby powder products gave people cancer. On Oct. 18, J&J announced that it would pull a single lot of 33,000 bottles off the market after a test uncovered trace amounts of the contaminant in one bottle of the product.

J&J said that it arranged for more tests to be conducted on the baby powder lot. Fifteen new tests of the bottle that the Food and Drug Administration said had trace amounts of asbestos found no sign of the carcinogen, the company said in a statement. It also ran 48 more tests on samples from the lot, and said it found nothing.

“Rigorous and third-party testing confirms there is no asbestos in Johnson’s Baby Powder. We stand by the safety of our product,” J&J said in a statement.

At stake are billions of dollars in potential legal liabilities, as well as the trust of customers who have seen repeated negative headlines about the brand.

The company said that it’s possible that the previous positive test came from lab contamination. J&J said that it put the baby powder samples through a variety of tests, including attempting to create a variety of laboratory conditions. In one test, the company said lab conditions may have introduced trace amounts of asbestos through an air conditioner that was contaminated.