The agreed maximum waiting time for a gynaecology outpatient clinic is four weeks, and seven weeks for treatment. That agreement is called the treeknorm. Gynaecology is one of the specialisms where the average wait sits structurally above it, alongside neurology, ophthalmology and urology.
Four weeks on paper, longer in practice. That gap costs you no care, but it does cost months of uncertainty.
Below is where to look up the current waiting time at your hospital, what right you have to shorten it, and what you can already have investigated meanwhile.
What is the treeknorm and what does it mean?
The treeknorm is an agreement between care providers and health insurers about how long you should have to wait at most. For access to the outpatient clinic and diagnostics that is four weeks, for treatment seven weeks.
It is a norm, not a guarantee. There is no penalty for exceeding it and you cannot force an appointment with it. What you can do with it: hold your insurer to it, because they carry a duty of care.
How long is the wait really?
That varies a great deal by hospital and by sub-specialty, and it changes constantly. The Dutch Healthcare Authority collects waiting times from hospitals every two weeks and publishes them through ZorgkaartNederland.
So never look at an average, look at your hospital right now. There are regularly weeks of difference between two hospitals half an hour apart. Your referral is not tied to one institution, so that comparison is worth making.
| What | Treeknorm | Where to find the live figure |
|---|---|---|
| First gynaecology clinic appointment | 4 weeks | ZorgkaartNederland, data from the NZa |
| Diagnostics such as an ultrasound | 4 weeks | ZorgkaartNederland or the clinic itself |
| Treatment or procedure | 7 weeks | The hospital, at intake |
| Blood test | No norm needed | Usually bookable within a few days |
Can you shorten the wait?
Often yes, and the least used route is the best one: care mediation. Every health insurer in the Netherlands offers this, usually through customer service or a separate waiting list team. They find a contracted provider with a shorter wait and arrange the handover.
It costs you nothing and it is separate from your deductible. Yet most people do not know it exists. Call the number on your insurance card and ask for zorgbemiddeling or wachtlijstbemiddeling.
It also helps to ask whether you can go on a call list for cancelled appointments, and to check that your referral is going to the right sub-department. A referral to the general clinic can take longer than one to the specific sub-specialty.
What does not help: calling every week to ask whether anything has opened up. Scheduling runs on a waiting list, not on who calls most often. Instead, ask once explicitly to be put on the call list and have it recorded that you can come at short notice.
Note too that a second hospital sometimes wants its own intake, even when your referral is valid. Check that before switching, otherwise you trade four weeks of waiting for six weeks of starting again.
What can you have investigated meanwhile?
Waiting for the clinic does not mean nothing can happen. Part of what the gynaecologist will want to know can be measured now, and then you bring that result to your appointment.
Hormone levels are the clearest example. Your oestradiol, progesterone, FSH, LH, AMH and thyroid values can be measured in blood without a referral, and a hormone test for women is usually bookable within a few days. Which values say something at which point in your cycle is covered in the pillar on hormone testing in women.
If your question is about fertility, our article on fertility testing in women describes which blood tests are usual in that pathway. If you would rather first know where you can go nearby, where to find a reliable hormone test helps.
Frequently asked questions
Can I go to another hospital with the same referral?
Yes. A referral letter is not tied to one institution and is usually valid for a year. Do check whether your insurer has a contract with the hospital you choose, because that determines reimbursement.
Does waiting count towards my deductible?
No, waiting costs nothing. Your deductible only starts running the moment care is delivered and billed. In 2026 that mandatory deductible is 385 euros.
What if my symptoms get worse meanwhile?
Then contact your GP, not the waiting list. The GP can adjust the urgency of your referral, and urgent cases are seen outside the regular waiting time.
References
- Dutch Healthcare Authority (NZa), Waiting times in specialist medical care, 2026
- ZorgkaartNederland, Gynaecology outpatient clinic waiting times, 2026
- Zorginstituut Nederland, Deductible under the Health Insurance Act, 2026
- Thuisarts.nl, I have to wait for care, 2026
Every blood test result through Lunara includes a professional assessment by a BIG-registered doctor. If your symptoms worsen while waiting, contact your GP.
Author
Lunarahealth
Dr. Naimi, BIG-registered physician, oversees the medical standards behind our content and assessments. Read our medical policy
