Usually the sperms are taken from the ejaculate but in cases of azoospermia, sometime sperms are removed with the help of a needle. Various procedures such as –

• PESA (Percutaneous Epididymal Sperm Aspiration)
• MESA (Micro Surgical Epididymal Sperm Aspiration)
• TESA (Testicular Sperm Aspiration)
• TESE (Testicular Sperm Extraction)
• Micro-TESE (TESE performed with the help of a microscope)