Sperm Motility Problems
It may be considered when the proportion of motile sperm
is low and the isolation of suitable sperm from the
sample is considered necessary.
Learn what to expect when visiting the Emergency Department.
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IVF Treatment
Microinjection — ICSI
Embryo Transfer
EmbryoGlue Method
Egg Donation
Sperm Donation
Embryo Donation
Tandem Cycle
Surrogacy
Preimplantation Genetic Testing — PGT
Next-Generation Sequencing — NGS
Microchip Sperm Selection
PESA — MESA — TESE
Gender Selection
ADVANCED SPERM PREPARATION METHOD
Microchip sperm selection is a laboratory
method that uses microfluidic channels to prepare sperm
cells for use in IVF and intracytoplasmic sperm injection
(ICSI) treatment. The aim is to help isolate a sperm
population with more favourable motility characteristics
and potentially better-preserved DNA integrity.
MICROFLUIDIC SPERM SELECTION
Microchip sperm selection is a sperm preparation
method that separates sperm cells in a semen sample
according to their ability to travel through extremely
fine microchannels.
In this method, also known as a sperm chip or microfluidic
sperm selection, the semen sample is placed in a specially
designed chip. Sperm cells with more favourable motility
characteristics travel through the microchannels and are
collected in a separate chamber for use in the laboratory.
The method is designed to reproduce certain physical
features of natural sperm migration through the female
reproductive tract in a laboratory setting. Depending on
the treatment plan, the resulting sperm population may be
used for conventional IVF or intracytoplasmic sperm
injection (ICSI).
A Microchip Is Not a DNA Test
The microchip system does not perform genetic testing
on sperm cells or examine the DNA of each individual
sperm cell. It helps isolate a more suitable sperm
population according to motility and the ability to
travel through microchannels. Scientific studies suggest
that the selected sperm population may have lower levels
of DNA fragmentation.

LABORATORY STEPS
The procedure is performed in the embryology laboratory
after the semen sample has been provided and does not
require any additional intervention for the patient.
The semen sample is assessed for sperm concentration,
motility, morphology and suitability for laboratory
processing.
If considered suitable, the embryologist places the
sample into a sperm chip containing specially designed
microfluidic channels.
Sperm cells with more favourable motility characteristics
travel through the microchannels in the chip and reach
the collection chamber.
The isolated sperm population is assessed once more and,
depending on the treatment plan, used for conventional
IVF or intracytoplasmic sperm injection (ICSI).
Does the Patient Undergo an Additional Procedure?
No. Microchip sperm selection is a sperm preparation
method performed in the laboratory. It does not require
the patient to undergo an additional injection, surgical
procedure or anaesthesia.

SPERM PREPARATION TECHNIQUES
Conventional techniques such as swim-up and
density-gradient centrifugation have long been used
for sperm preparation. The microchip method is designed
to separate sperm cells through their own movement
within microchannels.
In density-gradient centrifugation, the semen sample
passes through layers of fluid with different densities,
and sperm cells are separated with the aid of
centrifugation.
In the swim-up method, motile sperm are allowed to
swim into the upper layer of the preparation medium.
In microfluidic systems, sperm are selected as they
travel through fine channels within the chip.
Depending on the microchip system and laboratory protocol
used, the sample’s exposure to extensive centrifugation
may be reduced.
PERSONALISED ASSESSMENT
The microchip method is not a mandatory procedure for
every IVF treatment. The semen analysis, previous
treatment outcomes and laboratory assessment should
be considered together.
It may be considered when the proportion of motile sperm
is low and the isolation of suitable sperm from the
sample is considered necessary.
It may be considered as an alternative sperm preparation
method for selected patients found to have high sperm DNA
fragmentation.
It may be considered as part of the treatment plan for
couples who experienced low fertilisation rates during
a previous IVF or ICSI cycle.
For selected patients who did not achieve the expected
embryo development or pregnancy outcome in previous
treatments, the sperm preparation method may be
reconsidered.
It may be considered when the aim is to reduce the
mechanical and oxidative effects to which sperm cells
may be exposed during laboratory preparation.
For suitable semen samples, the microchip method may
be used to prepare sperm cells for intracytoplasmic
sperm injection (ICSI).
In some samples with a very low sperm concentration or
very poor motility, the microchip method may not yield
a sufficient number of sperm. The sperm preparation
technique should be selected by the embryology team
after the semen analysis.
REALISTIC EXPECTATIONS
Studies suggest that microfluidic sperm selection
may have beneficial effects on laboratory parameters
such as sperm motility and DNA fragmentation.
However, it has not yet been conclusively demonstrated
that the method increases pregnancy and live birth rates
across all patient groups.
For this reason, the microchip method should not be
regarded as a stand-alone treatment that guarantees
success, but as an alternative sperm preparation and
selection method that may be used for suitable patients.
Other Factors Affecting Success
Pregnancy and live birth outcomes do not depend solely
on the sperm selection method. The woman’s age, ovarian
reserve, egg quality, embryo development, endometrial
lining, genetic factors and embryo transfer conditions
should all be assessed together.

LABORATORY PROCEDURE
NO ADDITIONAL PROCEDURE
Microchip sperm selection is performed while the semen
sample is being prepared. The patient does not undergo
an additional procedure.
SPERM SELECTION
The aim is to separate sperm cells according to their
ability to move and travel through the microchannels.
INDIVIDUAL DECISION
The decision to use the method is based on the semen
analysis, treatment history and assessment by the
embryology laboratory.
FREQUENTLY ASKED QUESTIONS
Microchip sperm selection is a laboratory method that
separates sperm in a semen sample according to their
motility characteristics using microfluidic channels.
No. The microchip system does not perform genetic testing
on sperm cells. It helps separate sperm according to
motility and their ability to travel through microchannels.
No. The microchip method is not a genetic screening or
diagnostic test. Other genetic tests may be required to
assess the risk of genetic disorders.
Some studies have reported favourable findings relating
to sperm preparation outcomes. However, the method has
not been shown conclusively to increase pregnancy or live
birth rates in every patient.
Depending on the treatment plan and the characteristics
of the semen sample, it may be used for conventional IVF
or intracytoplasmic sperm injection (ICSI).
No. The procedure is performed on the semen sample in
the embryology laboratory. The patient does not undergo
an additional painful or surgical procedure.
No. The microchip method may not be suitable for some
semen samples with a very low sperm concentration or
very poor motility. The decision is made following
laboratory assessment.
RELATED TREATMENTS
Microchip sperm selection is considered alongside the
laboratory and fertilisation stages of IVF treatment.
Learn about the procedure in which a selected sperm
cell is injected directly into an egg.
Explore the Treatment →
Learn about ovarian stimulation, egg retrieval,
fertilisation and embryo transfer.
Explore the Treatment →
Learn about freezing and storing sperm cells for
potential use at a later date.
Explore the Treatment →
Explore the laboratory facilities where sperm, eggs
and embryos are assessed.
View Details →
LET US REVIEW YOUR TREATMENT PLAN
You can share your latest semen analysis and previous
treatment results with us. Our doctors and embryology
team can review the available information and advise
you about the most appropriate sperm preparation method.
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