4 doctors weighed in:
In north america when are obs doing blood vs genetic amnio tests on babies?
4 doctors weighed in

Dr. James Ferguson
Pediatrics
1 doctor agrees
In brief: Screening vs confirm
Blood screening is a relatively non invasive way to get information on significant problems but by definition it is screening.
Screening is an effort to narrow down the list of people that need a specific confirmatory test.By example, for every 1000 screened, 10 may be positive, and offered the amnio to find 1 true positive. An amnio is more invasive & risky but gives more definitive results.

In brief: Screening vs confirm
Blood screening is a relatively non invasive way to get information on significant problems but by definition it is screening.
Screening is an effort to narrow down the list of people that need a specific confirmatory test.By example, for every 1000 screened, 10 may be positive, and offered the amnio to find 1 true positive. An amnio is more invasive & risky but gives more definitive results.
Dr. James Ferguson
Dr. James Ferguson
Thank
Dr. Miriam Sivkin
Obstetrics & Gynecology
1 doctor agrees
In brief: Depends .
Both are being performed for different risks.

In brief: Depends .
Both are being performed for different risks.
Dr. Miriam Sivkin
Dr. Miriam Sivkin
Thank
Get help from a real doctor now
Dr. Jonathan Jassey
Board Certified, Pediatrics
13 years in practice
1M people helped
Continue
107,000 doctors available
Read more answers from doctors