Physiological Intracytoplasmic Sperm Injection (PICSI) is a sperm selection technique used alongside ICSI during certain IVF treatment cycles. It involves the use of hyaluronic acid (HA), a substance naturally present in the human body, to help identify sperm that demonstrate the ability to bind to HA.
Hyaluronic acid binding is associated with certain characteristics of sperm maturity. During PICSI, embryologists use this binding property as an additional method of sperm selection before injecting a selected sperm into a mature egg. However, HA binding does not confirm that a sperm is genetically normal or free from DNA damage.
PICSI has been investigated in cases involving male factor infertility, sperm DNA fragmentation concerns, previous unsuccessful IVF or ICSI cycles, and recurrent pregnancy loss. However, available evidence does not consistently demonstrate improved live birth outcomes compared with conventional ICSI.
The suitability of PICSI should be discussed with a fertility specialist based on individual fertility assessments, clinical findings, and the available evidence.
Uses hyaluronic acid binding as an additional method of sperm selection
Helps identify sperm displaying certain characteristics associated with maturity
Provides an alternative sperm selection approach during selected ICSI procedures
Has been investigated in certain cases of male factor infertility
Has been studied in relation to sperm DNA integrity, although HA binding does not confirm the absence of DNA damage
Note: PICSI has not consistently demonstrated improved live birth outcomes compared with conventional ICSI. Its clinical use should be considered based on individual fertility assessments and available evidence.
Physiological Intracytoplasmic Sperm Injection (PICSI) is a sperm selection technique used alongside ICSI during certain IVF treatment cycles. It uses hyaluronic acid (HA) binding to help identify sperm displaying characteristics associated with maturity before injection into a mature egg.
In conventional ICSI, an embryologist selects a sperm based on visible characteristics, including morphology and motility, before injecting it directly into a mature egg. PICSI adds a sperm selection step using hyaluronic acid binding. However, this additional step has not consistently demonstrated improved live birth outcomes compared with conventional ICSI.
PICSI has been investigated in selected cases involving male factor infertility, sperm DNA fragmentation concerns, previous unsuccessful IVF or ICSI cycles, and recurrent pregnancy loss. However, evidence remains insufficient to establish which patients, if any, benefit from PICSI compared with conventional ICSI. Its suitability should be discussed with a fertility specialist based on individual clinical findings.
