Two women who underwent bariatric surgery at Lachine Hospital want to file a class-action suit against the institution.

The women are part of a group of patients who were sent letters last February, told they'd have to undergo blood tests due to a surgical instrument that wasn't properly cleaned.

The patients were recalled to ensure they weren't infected with blood-borne diseases such as HIV and Hepatitis.

The two women tested negative but say they suffered damages in stress,  fear, pain and loss of time as a result of the hospital's negligence.

A judge will determine if the lawsuit will be approved.