According to a new study, Orasure Technologies Inc.’s OraQuick HIV rapid test is 10 times less accurate than the product’s label describes, Bloomberg reports.

OraQuick—the only rapid test licensed to scan both oral floods and blood for HIV—failed to detect at least 8 percent of 133 people who tested positive with a comparable diagnostic. OraQuick’s label says the test’s rate of failure is only 0.7 percent.

This report is the third since June 16 that affirms that OraQuick’s results are less accurate than the label claims. The U.S. Food and Drug Administration has asked the manufacturer to investigate the test’s false results.

“We’re keeping an ear to the phone and making sure they’re doing what they’re supposed to do,” Elliott Cowan, chief of FDA’s product review branch in the Center for Biologics Evaluation and Research Office of Blood Research and Review, told Bloomberg. “The ultimate goal is that the package insert appropriately represents the performance of the test.”