Down syndrome screening result MOMF value is high

Patient's question:

Down syndrome screening result, β-HCG median multiple (MOMF) is elevated. Is it necessary to have an amniocentesis?
Disease diagnosed from Down syndrome screening at 13 weeks and 5 days: β-HCG median multiple (MOMF) is elevated
Gestational age: 13 weeks and 5 days
Weight: 65 kg
Quantitative determination of pregnancy-associated plasma protein A (SPPA): 3162.4 mU/L
PAPP-A median multiple (MOMP): 0.82 MOM, reference value > 0.43
Free β-HCG (ulβhcg): 70.8 g/ml
β-HCG median multiple 1 (MOMF): 2.99 MOM, reference value 0.4-2.

Doctor's answer:

Disease Analysis: Hello, your indicators are in a relatively high-risk situation. Amniocentesis is more accurate. Suggestions: According to your above situation, it is recommended that you have another amniocentesis, which is more beneficial for ruling out some genetic diseases.