- the fifth wheel position on the lead trailer of a B Train must not be located more than 0.3. meters behind the center of the last axle on the lead semitrailer. Weight Limits: - the steering axle weight limit on straight trucks was increased to 7250 kg. - weight limit caps on the second trailer of A and C train double trailer combinations were. removed and replaced by the requirement that the weight of the tractor drive axles + the.
Conclusion. A single serum 2-hCG level on d 11 after embryo transfer has good predictive value for clinical pregnancy outcome in controlled ovarian stimulation cycles and helps to plan the subsequent follow-up.o assess the clinic value of a single maternal serum beta-human chorionic gonadotropin (2-hCG) assay 11 d after embryo transfer in ART pregnancies and to predict pregnancy outcome. A total of 384 pregnancies after embryo transfer were included.
However, the embryo implantation process is not different enough to warrant changing the timing of the blood pregnancy test. Frozen blastocyst transfers should have hatching and the beginning of implantation by about 1-3 days after the FET.