What you are looking for?

(using strict Kruger criteria)

Sperm morphology testing in Sofia — find out if sperm shape is affecting your fertility and what to do next.

If you and your partner have been trying to conceive without success and all other tests seem normal — sperm morphology could be the missing piece.

The Kruger strict criteria test examines the exact shape and structure of each sperm under high-resolution microscopy. Every sperm is analysed for defects in the head, neck and tail. The result tells you precisely what percentage of sperm have normal morphology — and what that means for your fertility.

What the results mean:

– Above 14% normal morphology — high fertilisation potential
– 4 to 14% — reduced fertility, but conception is possible
– 0 to 3% — significant abnormalities, assisted reproduction recommended

This test is particularly valuable for men who have normal sperm count and movement but still face unexplained infertility. The Kruger criteria are more detailed than standard WHO guidelines and give Dr. Shefketova’s team a clearer picture of exactly what is happening.

One test. Clear answers. A plan built around your results.

Dr. Shefketova and her specialist team — including experienced embryologists — are with you at every step of the process.

The Emotional Side of Male Fertility Testing

For many men, fertility testing is an uncomfortable subject. It can feel isolating — especially when the focus of fertility treatment tends to be on women.

At Dr. Shefketova’s clinic, male fertility is taken as seriously as female fertility. Every couple is assessed as a unit. There is no judgement here — only clear information and a path forward.

You are not alone in this. And the first step is easier than you think.

Book an appointment with Dr. Shefketova’s team →

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