Assessment of Two Methods for Progesterone Dosage During IVF

"Salivary dosage: patient will chew a dry swab for 2 minutes; when the swab is soaked it is put back in its small case and sent to the laboratory for analysis.~In parallel, the same patients will have a blood sample of 4 ml to dose blood progesterone on an EDTA tube. It will be also sent to the laboratory for analysis.~Both analyses will be done only once on triggering day meaning 36 hours before oocyte retrieval."