The medical examiner’s office said on Thursday that it was “committed to fairness and providing the highest standards of service for the people of New York City.” It added that courts in all five boroughs had “recognized that our DNA techniques are reliable and generally accepted by the scientific community.”

The Law Department said “all the claims will be reviewed.”

The medical examiner’s office, which performs about 5,500 autopsies each year, has long been hailed for being at the forefront in forensic techniques, notably for its role in identifying human remains in the Sept. 11, 2001, terrorist attacks, and for its efforts to go back and identify some of the anonymous dead in the city’s potter’s field.

The office has also developed novel techniques and procedures for analyzing trace quantities of DNA left on touched objects, such as a handgun passed among several people. While the office has said it can reliably discern DNA profiles from such samples, often referred to as low copy number DNA, other scientists have said they are doubtful that the results should ever be introduced in the courtroom.

Such critics say that while DNA profiles analyzed from a drop of blood or a semen stain are the gold standard of forensic evidence, the low copy number method involves too much subjectivity and even guessing, and could lead to wrongful convictions.