I am 42 years old and pregnant with my 4th child (my date of birth is 6th of November 1967) and I live in Perth, Australia.
My LMP was the 4/4/2010, I have a 23 day regular cycle and from many ovulation
predictor kits I have used in the past I usually ovulate on day 11 or 12 of my cycle as I get positive opk on day 10 or 11 of cycle.
Friday the 18th of June 2010 I had my blood sample taken to determine PAPP-A and Free B HCG. Monday the 28th of June I had my ultrasound at 12 weeks and 1 day from LMP.
Ultrasound yielded NT=1.3 mm, CRL=70mm, BPD = 22mm, with nasal bone clearly visible. Ultra sound was very good & consistent with my other children. The ultrasound dated my pregnancy
as 13 weeks and 1 day and stated that from LMP was 12 weeks instead of 12 weeks and 1 day? All my Children have constantly yielded greater CRL than normal at first trimester
screening and they all are born long, above the 97th percentile. Yet every time they date my pregnancies 1 week in advance because of the large CRL. Annoying really!
Anyway my bloods yielded: FREE B-HCG = 28.33IU/L equivalent to 0.717MoM
PAPP-A = 0.62IU/L equivalent to 0.323 MoM.
I would like to know what my risks are for trisomy 21, 18 & 13 based on my background and the results I have provided you with as I would like a second opinion.
Note: I had 3 healthy pregnancies at age 34, 35 and 40. then I had 2 miscarriages
at age 41 in the 11th week due to Trisomy 18 and a the second miscarriage a Blighted Ovum
at week 10 at age 42 In January 2010.
Almost forgot at time of scan I weighed 76 kilograms and I am 167centimeters tall