About AFP all are true except: (A) MSAFP detected 16-18 weeks of gestation, (B) Decreased in down syndrome, (C) MSAFP is unrelated to period of gestation, (D) Diabetic patients have increased AFP level
Answer is D. AFP increased in

wrong gestational age
Rh isoimmunisation
open neural tube defects
multiple pregnancy
IUFD
Anterior abdominal wall defects
renal anomalies