Hemoglobin, MCV, iron, ESR, creatinine, eGFR, platelets, and vitamin D. For persistent symptoms after coronavirus.
Blood collection at collection point
After your order you receive instructions by email
Make an appointment at a collection point near you
Blood collection at 1,000+ locations across the Netherlands
The Post-COVID Syndrome Basic blood test is specifically developed for individuals with persistent symptoms after a coronavirus infection. Long COVID or post-COVID syndrome is characterized by prolonged symptoms such as extreme fatigue, shortness of breath, muscle weakness, concentration problems, and a general feeling of unwellness. This test examines important markers that can explain why your symptoms persist: residual infection, kidney status, blood counts, and vitamin D. It helps identify if there are treatable causes for your post-COVID symptoms.
This test is important for anyone with persistent symptoms after COVID-19 such as extreme fatigue, shortness of breath, muscle weakness, or cognitive problems. COVID-19 can affect the blood, kidneys, and immune system. The ESR (sedimentation rate) measures if there are still active inflammations. Hemoglobin and iron check for anemia that explains fatigue. Kidney function can be affected after COVID. Platelets can be disturbed, causing clotting problems. Vitamin D is crucial for the immune system and recovery. This test helps identify treatable causes of post-COVID symptoms.
The results provide insight into possible causes of your post-COVID symptoms. This basic test measures:
This information assists in developing a treatment plan for post-COVID recovery.
Increased ESR indicates persistent inflammation after COVID that may require treatment. Elevated hemoglobin is rare but can indicate dehydration or blood thickening. High platelets can occur in response to inflammation. Elevated creatinine means reduced kidney function, which sometimes occurs after severe COVID and requires further evaluation. Very high vitamin D due to overdose of supplements can cause side effects. These abnormalities require medical evaluation and treatment.
Low hemoglobin and iron are common after COVID and cause extreme fatigue and shortness of breath. Iron deficiency should be treated with supplements. Low platelets can indicate immune problems or bone marrow disorders after COVID. Low MCV indicates iron deficiency anemia. Low vitamin D weakens the immune system and significantly delays recovery - supplementation is essential. All these deficiencies are treatable, and improvement in these values often leads to a significant reduction in post-COVID symptoms such as fatigue and muscle weakness.
This test has clinical value for specific complaints or indications, but is not intended as screening without symptoms.
Rationale for this test
Deze test bevat standaard bloedwaarden die klinisch relevant zijn bij langdurige klachten na COVID-19. De Nederlandse richtlijn 'Langdurige klachten en revalidatie na COVID-19' beveelt diagnostiek aan bij aanhoudende symptomen, waarbij bloedonderzoek zoals hemoglobine, ontstekingsmarkers, nierfunctie en vitamine D onderdeel kunnen zijn van de evaluatie. De test is echter niet bedoeld als standaard-screening voor iedereen na COVID-19, maar voor mensen met specifieke aanhoudende klachten waarbij deze bloedwaarden helpen behandelbare oorzaken te identificeren.
Dutch clinical guidelines and healthcare organisations
International scientific literature
We recommend consulting these independent sources before ordering a preventive health check.
Brochure on preventive health checks: careful choice, reliability, pros and cons, checklist.
Independent information about preventive health checks from the National Institute for Public Health and the Environment.
Reliable patient information about illnesses and complaints from Dutch GPs (NHG).
Public-facing website of the Dutch Society for Clinical Chemistry with explanations of blood tests and laboratory values.
Practical information
After ordering we generate a referral letter and email you the instructions. You pick a collection point yourself and book an appointment there. Blood is drawn at the location, processed at the lab, and your result arrives digitally.
Often within a few working days. How soon you can be seen depends on how busy the location is and the type of analysis. For specialist analyses we first ship collection materials, which takes a bit longer.
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
That depends on the test. Whether fasting is required, and from what time, is clearly stated in the instructions you receive after ordering. No surprises at the counter.
It varies per analysis: from same-day to a few working days. Standard values often come back quickly; analyses that go to an external lab can take a bit longer. You receive your laboratory report securely by email. It lists the measured values, units, reference ranges and any flags added by the laboratory.
We work with 1,000+ collection points across the Netherlands. After ordering you'll see which locations near you are available and you pick where you'd like to go.
“Very positive experience”
From ordering to having my blood drawn, everything went smoothly and was well organised. I really appreciated being able to visit a blood collection location in my own town so quickly. I received clear instructions beforehand, and the results arrived promptly by email too. Very satisfied!
“Good communication”
This company responds to questions thoroughly and promptly. The entire process, from requesting the test to having blood drawn and receiving the results, runs very smoothly. Overall, I am very satisfied!
“Wide choice of tests, fast and affordable”
You can choose the tests yourself. Fast delivery and processing, clear instructions and affordable.
“I am satisfied with the service”
I received a referral by email, just like from a GP. I did not have to send anything by post and could quickly visit a local blood collection centre. The results were fast and clear. The price was good, not too expensive, and all messages were secure.
“A very good experience”
A very good experience! I received quick answers to my questions, a custom blood test was put together, everything was arranged smoothly, and I could have my blood drawn by a healthcare professional nearby. The results were available within a few days. In short, very satisfied!
“Very good customer service”
The customer service is very good. I had a complex request, which caused an issue at the blood collection centre. Customer service resolved it very well. They also offer a wide range of tests at a reasonable price.
“Everything was well organised”
Everything was well organised. The products were delivered within a few days and, after sending in the samples, the results arrived within a few days too. Communication and information throughout the process were clear and friendly.
“Fantastic service”
Fantastic service! Very good customer service that responds quickly and thinks along with you. Good prices. I will definitely use BloedCheckup's services again.
“Very happy to have found this business”
Very happy to have found this business. We need to check our blood more often :) The process was easy. They sent me the kit at home, then I had to go to a clinic with the papers and they knew what they had to do. I got the results in less than a week.
“Smooth process and good support”
Amazing website experience. I ordered various tests for 2 people. We went to one of the supported centers and took samples. Also after the results were ready, I needed a letter from the laboratory and they prepared the letter for me in no time. Definitely recommended.
“Amazing service!”
Received a packet with everything needed, went to a walk in clinic (Amsterdam DC Clinic) where my blood was drawn and I was out the door within 5 minutes, and then after posting the samples, received results 2 days later. Results were easy to understand as well. Amazing service, would highly recommend!
“Great customer service”
I ordered a test through bloedcheckup.nl but later realized I no longer needed it. I contacted their support team, and they were very quick, responsive, and helpful in handling my cancellation. The whole process was smooth and efficient. Great customer service!