What Makes Sperm "Good Quality" for Donation?

When people think about sperm donation, one of the first questions they ask is: "How do I know if my sperm is good quality?” 

It's a great question, and the answer involves much more than simply having a high sperm count. 

At Semovo, every potential donor undergoes a comprehensive sperm assessment to determine whether their sperm meets the high standards needed for donation. This helps maximise the chances of successful fertility treatment while ensuring the best possible outcomes for the individuals and families relying on donor sperm. 

So, what exactly makes sperm "good quality"? 

It's About More Than Fertility 

Many men who are perfectly capable of fathering a child naturally may not meet the criteria for sperm donation. That's because donated sperm needs to perform exceptionally well throughout every stage of the process. 

Unlike sperm involved in natural conception, donor sperm must: 

• Be frozen and safely stored (cryopreserved) 

• Survive the freezing and thawing process 

• Retain enough healthy, moving sperm after thawing 

• Be suitable for use in fertility treatments such as IUI and IVF 

This means donor sperm is held to particularly high laboratory standards. 

The Four Main Signs of Good Quality Sperm 

During your sperm assessment, our laboratory team looks at several key characteristics. 

1. Sperm Count 

Sperm count refers to how many sperm are present in a semen sample. 

A healthy sample contains millions of sperm, but quantity alone doesn't tell the whole story. Even if the count is high, the sample also needs to contain sperm that move well and have a healthy structure. 

For sperm donation, we're looking for samples that provide excellent numbers before and after freezing. 

2. Sperm Motility 

Motility describes how well sperm swim. 

Healthy sperm need to move forwards efficiently in order to reach and fertilise an egg. 

Some sperm may move slowly, swim in circles or barely move at all. The greater the proportion of sperm showing strong forward movement, the better the overall quality of the sample. 

Motility is one of the most important measurements in donor sperm because sperm need to remain active after being frozen and thawed for treatment. 

3. Sperm Morphology 

Morphology refers to the shape and structure of sperm. 

Under the microscope, we assess whether sperm have: 

• A well-shaped head 

• A healthy midpiece 

• A normal tail 

While it's completely normal for some sperm to have unusual shapes, higher proportions of normally formed sperm generally indicate better overall semen quality. 

4. Survival After Freezing 

One of the biggest differences between donor sperm and sperm used in natural conception is that donor sperm is frozen before use. 

Not every sperm sample freezes equally well. 

As part of the assessment process, we evaluate how well sperm survive cryopreservation. Samples that retain good numbers of healthy, motile sperm after thawing are much more suitable for fertility treatment. 

This is one reason why only a small proportion of applicants ultimately become sperm donors. 

Lifestyle Can Influence Sperm Quality 

Sperm production is an ongoing process, meaning lifestyle choices can affect sperm health over time. 

Factors that may help support healthy sperm include: 

• Eating a balanced diet 

• Exercising regularly 

• Maintaining a healthy weight 

• Not smoking 

• Limiting alcohol intake 

• Getting enough sleep 

• Managing stress where possible 

While healthy habits can support sperm production, they can't guarantee someone will meet the strict requirements for donation. Genetics and natural biological variation also play an important role. 

Why Semen Analysis Is So Important 

Many applicants are curious about their fertility but have never had their sperm tested before. 

A sperm assessment gives valuable insight into your reproductive health by measuring sperm count, movement and shape. It's the first step in determining whether your sperm is suitable for donation, but it is not a diagnostic test. If you are concerned about your own ability to conceive, you should speak with a fertility clinic about a diagnostic semen analysis. 

Do I need to know the quality of my sperm before I apply?  

One of the biggest misconceptions is that you need to know you have "good sperm" before applying. This isn’t the case and is why there is a sperm assessment as part of the application process. 

What Happens If I Meet The Criteria? 

If you meet our initial application criteria, then it’s time to book your implications appointment. This is where we will discuss over the phone what it means to be a donor, what you can expect from the process, review your own and your family’s medical history in detail, and prepare to share it with the doctor, as well as have any questions you may have at this stage answered by a member of our team. 

Once your application has been accepted, you’ll be invited to visit us at your chosen Semovo location for an appointment with a member of our team. 

It’s here you’ll provide your first semen sample for testing, which allows us to evaluate your sperm count, shape and movement. This is a crucial aspect of what we do, and it will bring you one step closer to becoming a donor.  

These tests help us ensure your sperm will be suitable for the different types of fertility treatments and be able to withstand freezing and thawing, so only those applicants with the highest quality sperm will be able to proceed. 

For those who do not become a Semovo donor, don't be disheartened. Please remember that we’re very selective of our donors and want to ensure we give those looking to use donor sperm the best chances of success. 

Every Donation Makes a Difference 

High-quality donor sperm plays an essential role in helping people build families. 

Whether recipients are experiencing male infertility, are a same-sex couple or are pursuing parenthood as a single person, every successful donor has the potential to change lives. 

While not everyone will meet the laboratory criteria, every application is appreciated, and everyone who applies takes an important step towards helping address the ongoing shortage of donor sperm in the UK. 

Ready to Find Out? 

If you're aged between 18 and 45, live in the UK long term and would like to discover whether your sperm is suitable for donation, Semovo's team is here to help. 

Your sperm assessment is carried out as part of our supportive donor assessment process, giving you expert insight into your sperm quality while helping determine whether you could make an incredible difference to someone's future family. 

Take the first step today by applying throughSemovo.