Blood DNA levels may signal pregnancy problems

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria for all patients: * The patient must have given her informed and signed consent * The patient must be insured or beneficiary of a health insurance plan Inclusion Criteria for patients in group P: * The patient is pregnant and has complications typical of placental vascular disease (preeclampsia, eclampsia, HELLP syndrome, retro-placental hematoma, in utero fetal death) or venous thromboembolism (deep vein thrombosis, pulmonary embolism) Inclusion Criteria for patients in group T1: * The patient is available for 3 months of follow-up * The patient is a non-pregnant healthy volunteer * No identifiable chronic pathologies * No history of neoplastic disease * No history of chronic infectious disease * No acute disease (such as benign infection), now or within the past two weeks Inclusion Criteria for patients in group T2: * The patient is available for 7 months of follow-up * The patient is pregnant, with no identifiable pregnancy complications * No identifiable chronic pathologies * No history of neoplastic disease * No history of chronic infectious disease * No acute disease (such as benign infection), now or within the past two weeks Exclusion Criteria for all patients: * The patient is participating in another study (with the exception of the following studies: PAPILLO-PMA (2013-A00538-37), ElastoMAP (2013-A01148-37), ElastoDéclenche (2014-A00828-39), LXRs (2009-A00968-49), Bakri (2013-A00914-41), OASIS 2 (2013-A00022-43)). * The patient is in an exclusion period determined by a previous study * The patient is under judicial protection, under tutorship or curatorship * The patient refuses to sign the consent * It is impossible to correctly inform the patient * The patient cannot read French * The patient is receiving hormonal ovarian stimulation in the context of medically assisted procreation * Impossible to perform venipuncture under good conditions * New complication or pathology during the study (except for pregnancy complications in group P) Exclusion Criteria for group P: * Twin or multiple pregnancy * The patient is participating in another study (with the exception of those mentioned in the exclusion criteria for all patients and the DG Postpartum study (2013-A00277-38) Exclusion Criteria for group T1: * The patient is pregnant * The patient is breast feeding * The patient has given birth within the last 3 months * Known history of chronic disease * History of treated neoplastic disease * Acute disease within the past two weeks (includes benign disease) Exclusion Criteria for group T2: * Pregnancy with complications * Known history of chronic disease * History of treated neoplastic disease * Acute disease within the past two weeks (includes benign disease) * Twin or multiple pregnancy