Triple marker test is almost obsolete now a days as its detection rate is very low and we have many better options than the triple marker test ( QUADRAPLE TEST/NIPT) but since u have done double markers test and its low risk then no need for other test for ruling out chromosomal ANOMALY Anomaly TIFFA SCAN will suffice to rule out structural malformations Avoid Stress and anxiiety Take care Stay safe 🙏