Just got my results but it doesn’t state whether the risk is low medium or high it just gives the numbers and nothing to compare to or any normal values,

My numbers are t21 1:36620

I’m assuming I’m quite low risk? When I asked the doctor that was covering for my general practitioner she refused to answer anything as she’s not an obstetrician .. and she actually said she didn’t know and to just wait till my next ultrasound with obgyn at 20 weeks .. can someone give me any insight ?