THis has nothing to do with OBL. But alot of people are asking about how fast it takes to test DNA. Mostly we use PCR method, it's gotten much faster; it used to take 4 hours. Now with fast cycling you can get results in an hour. But still there is the DNA processing, that takes 2 hours easily. Also you have to run the microsatellites on a gel, that could be an hour for agarose or all day for poly acrylamide. I have no idea what they did to confirm/validate the results, but 24 hours is not unreasonable length of time. Any lower, i'd be suspicious. It really depends on what tests they did. Some take days, some not.
If anyone cares about bona fides, i have done forensic dna analysis, i have 13 years lab experience and several graduate degrees.