Objective To investigate the effect of hCG day estradiol (hCG-E2) used in Down Syndrome
screening on maternal serum levels of PAPP-A in fresh in vitro fertilization (IVF) cycles …

STUDY QUESTION Can independent predictors of pregnancy-associated plasma protein-A
(PAPP-A) levels be identified in a group of women who conceived following IVF/ICSI …

Objective Pregnancy-associated plasma protein A has been reported to be low in Down
syndrome affected pregnancies during the first trimester of pregnancy. The aim of this study …

Objectives To assess the association between serum pregnancy‐associated plasma protein
A (PAPP‐A) and free β‐human chorionic gonadotropin (free β‐hCG) in the first trimester and …

BACKGROUND Time-to-pregnancy (TTP) is a clinical tool used to measure uterine
receptivity and a couples' fertility in spontaneously conceived pregnancies. The objective of …

Objectives To confirm that measuring pregnancy‐associated plasma protein‐A (PAPP‐A) in
both first‐and second‐trimester serum samples improves Down syndrome screening …

Purpose Low levels of plasmatic pregnancy-associated plasma protein-A (PAPP-A) and
high levels of free-beta human chorionic gonadotropin (beta-hCG) could influence the …

STUDY OBJECTIVE: To assess the relationship between first-trimester maternal serum
PAPP-A and free β-hCG and birth weight. DESIGN: Observational study. SETTING …

Objective Pregnancy-associated plasma protein A (PAPP-A) is a placenta-derived
glycoprotein produced by trophoblastic cells, which rises gradually during the early weeks of …

Objective The aim of this study was to investigate whether subfertility, measured as longer
time‐to‐pregnancy (TTP) in spontaneously conceived pregnancies, affects the first trimester …