Prospective cohort multicentric study including infertile patients undergoing a pregnancy test on βhCG day (around ET +11), after an ET in the context of an artificial cycle and receiving LPS with vaginal natural progesterone following the clinical practice in IVI RMA (Spain).
The subject must provide written informed consent prior to any study related procedures
Women ≤50 years old
BMI ≤ 35 kg/m2
Adequate endometrial thickness (>6.5mm) and pattern (Triple A structure) in the proliferative phase
Uterine Pathology, adnexal pathology
Systemic diseases
All infertile patients undergoing an embryo transfer in the context of an artificial cycle will be recruited.
Cohort
Prospective
BLOOD COLLECTION FOR P4 DETERMINATION
Procedure/SurgerySerum progesterone levels on the pregnancy test day
LIVE BIRTH
Record of live birth existence
ONGOING PREGNANCY
Pregnancy confirmation by the observation of the presence of at least one gestational sac on ultrasound
POSITIVE PREGANCY
Measurement of pregnancy test results
BIOCHEMICAL MISCARRIAGE
Measurement of existence of miscarriage after a positive pregnancy test
SERUM P4 LEVEL ON B-HCG DAY
Measurement of serum progesterone levels on the pregnancy test day
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