'Positive' triple test. Should I have an amnio?

[Dannie]

My triple test result has come back as 1 in 65 (compared to 1 in 170 for an average pregnant 38yo). DH is adamant that I should have an amnio, I'm not keen to have a needle stuck in my stomach and feel that 1 in 65 is pretty good odds. Whatever happened to just assuming that everything will be fine? Should I just do it because it'll reassure dh (and me, I guess)?
I hate the overmedicalisation of pregnancy (and the way people keep telling me how old I am) and I'm fascinated by the disparity between the information from our wonderful midwife and from the not very impressive registrar at the hospital, but I'll be sent to St Thomas's for the amnio, so I should see someone competent (and if all goes well I'm having a home birth)
But is all this necessary, or are they just doing it because they can?

The Nuchal fold test is something like 5 times more sensitive than the triple test; definitely tends to be much more worthwhile to get.

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Buuny2 - yes as said the nuchal is generally very accurate and that's all I had with ds last year. My consultant (the one who said don't have the blood test) said the scan was reassuring and that was enough for us - and I was pleased that the measurement saw my risk adjusted down from the average risk for my age. I wouldn't have an amnio anyway.
If the measurement is under 3mm then your Downs' risk is low - above that they may suggest further tests. But again, even if it is a higher measurement it's just an indicator, not a diagnosis.

Thanks for the reassurance, I'll let you know when I have mine.