Do pregnancy tests work on dogs?

If you think your dog may be pregnant, you will want to confirm this as quickly as possible. But do pregnancy tests work on dogs? And what is the most reliable way to confirm whether your dog is expecting puppies?

Why Don’t Human Pregnancy Tests Work on Dogs?

You might be wondering whether you can simply buy a pregnancy test, just as you would for a person, or whether there are specific home tests available for dogs. The answer is no. Human pregnancy tests do not work on dogs, and confirming pregnancy requires different methods altogether.

Human pregnancy tests are designed to detect a hormone called human chorionic gonadotropin (hCG). This hormone is produced during human pregnancy and can be detected in urine shortly after conception.

However, dogs do not produce hCG during pregnancy. Instead, canine pregnancy involves different hormonal changes, meaning a human pregnancy test cannot detect whether a dog is pregnant. In fact, even if your dog is expecting puppies, a standard home pregnancy test will almost certainly produce a negative result.

For this reason, human pregnancy tests should never be relied upon to diagnose pregnancy in dogs.

Are There Home Pregnancy Tests for Dogs?

Unlike human pregnancy tests, there are no widely used home urine tests that can reliably confirm pregnancy in dogs. While you may come across products marketed as canine pregnancy tests, these are generally less reliable than veterinary diagnostic methods and should not replace professional advice.

As a result, if you suspect your dog is pregnant, arranging a professional examination is the most accurate way to find out.

How Can You Test for Pregnancy in Dogs?

There are several reliable ways to confirm pregnancy, depending on how long ago your dog was mated. These include:

• Ultrasound scans
• Blood tests
• Abdominal palpation
• X-rays later in pregnancy

Why Is an Ultrasound Scan Considered the Best Option?

An ultrasound scan is one of the most effective and reassuring options for a dog pregnancy check. It can usually detect developing puppies from around 25 to 30 days after mating, allowing a trained professional to assess the pregnancy while it is still in its early stages.

What Can a Dog Pregnancy Ultrasound Show?

An ultrasound scan can help to:

• Confirm whether your dog is pregnant
• Assess the viability of the pregnancy
• Monitor the developing puppies
• Estimate how far along the pregnancy is
• Provide reassurance if pregnancy is suspected

Can a Blood Test Confirm Dog Pregnancy?

Yes, a blood test can be used to confirm whether your dog is pregnant. Veterinary blood tests can detect a hormone called relaxin, which is produced during canine pregnancy.

Relaxin is generally present from around 25 to 30 days after mating, making blood testing another useful method of confirming pregnancy.

However, blood tests provide less information than an ultrasound scan, as they cannot assess the condition or development of the puppies.

Can You Tell if Your Dog Is Pregnant Without a Test?

Some owners recognise changes that suggest pregnancy before visiting their vet. The most common signs include:

• Increased appetite
• Weight gain
• Enlarged nipples
• Sleeping more than usual
• Behavioural changes
• Nesting behaviour later in pregnancy

However, these signs are not always reliable, as some dogs experience a false pregnancy, while others show very few symptoms during the early stages of a genuine pregnancy.

For this reason, visible changes alone should never be used to confirm pregnancy.

What Is a False Pregnancy?

False pregnancy, sometimes called pseudopregnancy, is relatively common in female dogs. It occurs when hormonal changes following a season cause a dog to behave as though she is pregnant, despite not carrying puppies.

Signs of a False Pregnancy

Signs of a false pregnancy may include:

• Milk production
• Nesting behaviour
• Mothering toys
• Enlarged mammary glands
• Changes in appetite
• Behavioural changes

When Should You Arrange a Dog Pregnancy Check?

If your dog has recently mated, it is usually best to wait until around 25 to 30 days afterwards before arranging a dog pregnancy check.

At this stage, an ultrasound scan can often provide clear confirmation of pregnancy while allowing your veterinary team to assess how the pregnancy is progressing.

Your vet may also recommend a later X-ray if you would like a better estimate of how many puppies your dog is carrying before labour begins.

What Are the Benefits of Confirming Pregnancy Early?

Early pregnancy confirmation offers several important advantages. These include:

• Knowing whether your dog is genuinely pregnant
• Planning appropriate nutrition
• Monitoring your dog’s health
• Preparing for whelping
• Receiving veterinary guidance throughout pregnancy
• Reducing uncertainty following mating

What Are the Best Ways to Confirm Pregnancy in Dogs?

If you think your dog may be expecting puppies, there are several best practices to follow:

• Avoid relying on human pregnancy tests.
• Arrange a veterinary examination.
• Book a dog pregnancy check using an ultrasound scan from around 25 to 30 days after mating.
• Follow your vet’s advice throughout the pregnancy.
• Continue regular health checks until your dog’s puppies are born.

So, Do Pregnancy Tests Work on Dogs?

Unfortunately, the answer is no. Human pregnancy tests are designed to detect a hormone that dogs simply do not produce, making them unsuitable for diagnosing canine pregnancy.

The Most Reliable Way to Confirm Dog Pregnancy

If you think your dog may be pregnant, the most reliable approach is to arrange a professional dog pregnancy check. An ultrasound scan can confirm the pregnancy, assess the developing puppies and give you the information you need to provide the very best care throughout the weeks ahead.