Serotonin Test


Serotonin is a central nervous system neurotransmitter that is responsible for many hormonal regulations inside the brain. Serotonin deficiency may lead to mood disturbances, sleep disorders, and depression. If you have been experiencing symptoms of unknown origins, especially trouble sleeping or mood swings, you may need to test the concentration of serotonin to see if you need medical management.

yesAt-home test without need for a doctor’s visit

yesClinically approved test that is analyzed by an ISO 13485 certified lab

yesComprehensive and fast result report in English

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Psst… If you buy more than 1 test, you get a discount on the entire order. If you buy 3 tests, you get up to 10% discount. The discount is deducted automatically.

What is serotonin?

Serotonin is a hormone made from the essential amino acid tryptophan. Serotonin is important for several functions in the body, including the brain and gastrointestinal tract. It also effects the blood circulation by helping the platelets (platelets) coagulate in wound healing.

Serotonin deficiency

The serotonin levels are partly dependent on the amino acid tryptophan, since it is a precursor to serotonin, but also on the gut health, since 90% of our serotonine is produced in our intestines. Several vitamins and minerals are also important for the production of serotonin – too much alcohol, caffeine and sweeteners can inhibit the production in the body. Chronic stress and anxiety  also prevent the brain from producing enough of serotonin. Serotonin deficiency can affect physical and mental health and can sometimes be difficult to identify. When there is a great lack of serotonin, it can, for example, cause moodiness, stress and depression. Pay attention to some of the warning signs listed below if you consider whether you have low levels of this hormone:

  • Anxiety
  • Irritation
  • Depression
  • Fear
  • Difficulty sleeping

Serotonin and the gut

Most of our serotonin is produced in the gut; about 90%. Research is beginning to find more and more connections between imbalances in our gut flora and conditions such as depression. Due to this correlation, it is important to maintain good gastrointestinal health since it affects our to mental health.

Before taking the test

If you take SSRIs (antidepressants), 5-HTP or tryptophan, it will affect your test result. 5-HTP and tryptophan can increase the body’s own serotonin production, which thus affects your levels on the test result. Because SSRIs (antidepressant drugs) cause the serotonin to stay longer in the blood instead of being absorbed into the cells, they will also affect your test results. If you want to know your level in combination with taking these supplements, you can continue to take them as usual, but if you want to know your natural production without the impact of these products, you should avoid taking them 5-7 days before collecting the test.

How does the serotonin test work?

The serotonin test is measured in urine. After you have placed your order, we will send you a complete test kit with everything you need to be able to collect the sample yourself at home. The urine is collected in the morning from your morning urine and then sent to our lab for analysis. You will receive your test answer digitally after the lab has analyzed your test. The test is sent in a discreet box from us.

Additional information

Weight 0,030 kg


You take the test yourself at home through a simple urine sample. The urine should be collected from your first morning urine. Remember not to drink more than 1 liter in the evening before you take your test (menstruating women should remember NOT to take the test during menstruation).

Your sample is then sent to our lab for analysis and you will receive your answer digitally as soon as the lab has analyzed your sample.

  1. Make a purchase on the website and pay with Swish or card (Visa, AMEX or Mastercard). Easy and safe. 
  2.  A test kit is sent to the address you enter when ordering. After your order, we will send home a test kit with instructions. It also comes with a stamped envelope that is mailed to us. It is recommended to send in your sample on a Monday or Tuesday. 
  3. Carry out the test according to the instructions included in your test kit and on the web. Our Support can also answer all possible questions, before and after submissions and results. 
  4. Send the test kit to our ISO certified lab and wait for results digitally. You will normally receive an answer within 15 working days after our lab has received your sample.

For more detailed instructions, see here under the category “Urine test“.


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