Inclusion criteria:  Patient, male or female, >18 years old at the time of signing informed consent; Patient for whom a diagnosis of radiculopathy on lumbar disc herniation has been made, and for whom surgery has been scheduled in the Neurosurgery department; Patient affiliated to a social security health insurance scheme; Patient able to understand the objectives and risks of research and to give informed, dated and signed consent; Patient having been informed of the results of the prior medical examination; Women of childbearing age provided that a negative blood pregnancy test is recorded at the inclusion visit and effective contraception used throughout the study.  Exclusion criteria:  Patient with a history of lumbar spinal surgery (multiple herniated discs, herniated disc other than lumbar); Patient with HIV, active cancer, HBV, HCV (verified by interview); Patient on long-term systemic corticosteroid therapy; Patient with an ASA score > 3 during the consultation with the anesthesiologist; Inability to give the patient informed information (patient in an emergency or life-threatening situation, difficulties in understanding); Patient in exclusion period (determined by a previous or ongoing study); Subject under safeguard of justice; Subject under curatorship; Pregnancy; Breastfeeding.