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Can someone help with my Quad test results??

(4 Posts)
scarlotti Tue 02-Jun-09 18:57:31

I've had my quad test results back today. The covering letter says I've been reported as a screen negative with the risk being less than 1 in 250.
My screening info book says that the cut off for low risk is 1 in 250, therefore putting me in the nearest category to the high/low risk cut off.
My previous pregnancies have given me much better odds, being 1 in the 1000's.
I'm 35 so I know my age will be a factor that brings the risk ratio down.

There's then an attachment showing the actual medical results and an interpretation. This says screen negative and gives a risk of 1 in 7,700 at term.

Can someone shed any light on why the two pieces of information are so wildly different?

I can list the marker results too if that would mean anything to anyone.
Thanks in advance.

alittleteapot Tue 02-Jun-09 23:26:30

Unless I've misunderstood your post: your letter says your risk is less than 1 in 250 which is the cut off for high risk. the attachment goes into more detail saying your actual risk is 1 in 7,700 (ie extremely low) - they are not contradictory, one just elaborates on the other. They're only interested if you are over 1 in 250 or under because that's how they quantify risk. The 1 in 7,700 is just more detailed information, and very reassuring.

SympatheticConsultant Tue 02-Jun-09 23:50:15

'alittleteapot' is correct in her interpretation.

scarlotti Wed 03-Jun-09 10:02:43

Thanks. I think the thing that was confusing me is that the booklet that comes from the mw regarding the screening talks about bands of risk results, with 1 in 250 being succeeded by 1 in 500, 1 in 2000 etc.
I guess I presumed that I'd be given a higher band on the letter if my actual risk was the 1 in 7700 - which, yes, is a very reassuring result.

I might feedback that their covering letter can lead to confusion when read in conjunction with their booklet.

Thanks for replying.

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