Cord blood collection for stem cell storage remains a popular procedure due to the advantages associated to it. In the last ten years, the therapeutic potential of umbilical cord stem cells was demonstrated in the treatment of bone pathologies, neuropsychiatry, metabolic and genetic diseases. There are several factors with direct influence on the quality and quantity of cord blood collection for stem cell storage. The collection principles should be individualized according to the maternal and fetal characteristics. Furthermore, in the context of COVID-19 pandemic, additional information can be obtained through this procedure. We present a specific case-adapted strategy for the collection of umbilical cord blood and its application in analyzing the transplacental transfer of maternal COVID-19 antibodies after vaccination. We suggest that the informed consent offered to the future parents prior to the procedure should include the history of COVID-19 during pregnancy, the vaccination status of the mother and the gestational age at the time when this event occurred.