Do you think DNA test are now more accurate?

We are just as sure that my husband did not father a son that is claimed to be his as the test he had taken almost 15 years ago at 99%. Meaning were 99% sure he's not. It was done in a neighboring town, mailed out of state to a lab, results back in about 3 weeks, the mother and child originally refused to show, until threatened with court contempt, so the specimens were taken 10 days apart from my husband's. It came back as a form letter at 99% that he could not be excluded among general population as the father. Child support, etc, all under the bridge as "child" is 22. Just wonder if you think DNA testing has come further and would be more accurate today? I know 99% is accurate, but just feel it was done in a massive lab, kind of a factory setting, also know that this lab had a venue for nation wide DNA testing to prove fathers were as such, so then makes you wonder if they were after quantity, nailing a father and not accuracy.