Down syndrome screen

This probably sounds weird to post and obviously we're happy our baby seems to be healthy but I almost wonder if my results are accurate because it seems like most people get much less of a ratio. Ours came back after the second sequential screen at 1 in 100,000. Does that seem normal or like the results are wrong? I see a lot post their results say 1 in 9,200 or 1 in 350 etc. Like I said were happy with our results but do they seem far out there?