OBJECTIVE: We sought to characterize the relationship between serum @entity14257 (25-OH D) levels and implantation and clinical pregnancy rates in @entity1 who undergo a euploid blastocyst embryo transfer. STUDY DESIGN: This retrospective cohort study, conducted in an academic setting, included 529 cycles in which comprehensive chromosome screening was performed as part of routine @entity249 care with an autologous transfer of 1 or 2 @entity2085 . After excluding repeat cycles there were 517 unique cycles representing 517 @entity1 for evaluation. @entity560 levels from serum samples obtained on the day of ovulation trigger in the fresh in  vitro fertilization cycle were analyzed. The primary outcome was ongoing pregnancy rate as defined by sonographic presence of fetal heart rate at >8 weeks' gestation. RESULTS: For the population as a whole, serum @entity560 ranges and pregnancy outcomes did not correlate. Furthermore, pregnancy rates did not differ when comparing @entity1 in different strata of @entity560 levels (<20, 20-29.9, and >= 30 ng/mL). No meaningful breakpoint for  @entity560 levels and ongoing pregnancy rate was identified using  receiver operating characteristic analysis with the resultant line  possessing an area under the curve of 0.502. Multivariate logistic  regression controlling for age, transfer order, race, season, and  body mass index did not yield a different result. The study was powered to detect an 18% difference in ongoing pregnancy rates between @entity1 grouped by the 3 @entity560 ranges. CONCLUSION: In @entity1 undergoing euploid embryo transfer, @entity560 status was unrelated to pregnancy outcomes. Measuring serum 25-OH vitamin D levels does not predict the likelihood that @entity2085 will implant. These results may not apply to @entity1 who do  not undergo extended embryo culture, blastocyst biopsy for comprehensive chromosome screening, and euploid embryo transfer.

XXXX levels do not affect IVF outcomes following the transfer of @entity2085 .

@entity1 :: ('9606', 'Species') :: ['women', 'patients'] @entity249 :: ('MESH:D007246', 'Disease') :: ['infertility'] @entity2085 :: ('MESH:D020964', 'Disease') :: ['euploid blastocysts'] @entity14257 :: ('MESH:C104450', 'Chemical') :: ['25-hydroxy vitamin D'] @entity560 :: ('MESH:D014807', 'Chemical') :: ['vitamin D', 'Vitamin D']
@entity560 :: (MESH:D014807,Chemical) :: ['Vitamin D']
