laboratory diagnostic - genetics mollecular biology - Sperm, chromatin structure, sperm 2 x 500 µL. Freeze the sample within 1 hour after sampling. Observe a period of abstinence between 3 and 5 days. Reliability of method associated with adherence to pre-analytical procedure: - after liquefaction (approximately 30 min) and homogenisation, estimate the count (must be greater than 1 million/mL); - freeze 2 x 500 µL aliquots (Cryotubes supplied upon request), by immersing them directly in liquid nitrogen or by placing them in a freezer at -80°C; Storage and transportation at -30°C. Attach the spermogram results if possible, Flow Cytometry, ssso, todylaboratories®, bmn, code L16LD1716