Created at 12:54 p.m. Sep, 13, 2026
Author:
shin74
Type of change:
Content error
Rationale for change
Edwards
Current
Suggested
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Extra
In contrast, Down syndrome which has increased β-hCG
| Trisomy | Patau (13) | Edward (18) | Down (21) |
|---|---|---|---|
| First Trimester | |||
| β-hCG | ↓ | ↓ | ↑ |
| PAPP-A | ↓ | ↓ | ↓ |
| Second Trimester | |||
| β-hCG | ↔ | ↓ | ↑ |
| Inhibin A | ↔ | ↔ or ↓ | ↑ |
| α-fetoprotein (AFP) | ↔ | ↓ | ↓ |
| Estriol | ↔ | ↓ | ↓ |
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Watch associated Bootcamp video - High Yield Genetic Disorders : Autosomal Trisomies
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