How can I test my histamine?

https://bloodtesting.nl/histamine-intolerantie-uit-ont.../

For this test you don't have to go and get blood, you just fill, according to the instructions, a tube with stool.

This test checks whether you produce antibodies against histamine DAO. For this you will receive a referral for the nearest post office in your area to fill the tubes you will receive from us by mail:

https://bloodtesting.nl/dao-diamino-oxidase-histamine-i...

1. Histamine test from stool measures if there is Histamine intolerance

2. The DAO blood test measures whether the histamine intolerance is caused by DAO

So the advice is to do the stool test first to see if there is a histamine intolerance, and then the DAO blood test to find out the cause.

Please note that when using antihistamines (drugs to suppress allergic reactions), the test will not work.

If you are on anti-histamines the histamine test can be false negative, only then it is not actually false negative, but histamine formation is inhibited and therefore the value is lower than without medication.
It is also important to realize that histamine -like other biogenic amines- are released in the gastrointestinal tract, but also elsewhere in the body. For example, if you have suffered an insect bite, a lot of histamine will be released locally, but you will not measure anything in the stool. Also, DAO will be low, because it takes care -primarily- of the breakdown of histamine in the gastrointestinal tract.
However, the histamine in the urine will then become higher, as will the breakdown product methylhistamine. The enzyme Methyltransferrase is responsible for this breakdown and not DAO.
Therefore, when histamine symptoms occur, it is advisable to measure histamine in the feces as well as methylhistamine in the urine and possibly DAO in the blood.

Decreased histamine breakdown due to decreased DAO activity, results in you making too much histamine, which can lead to various symptoms similar to an allergic reaction. The intake of histamine-rich foods, alcohol and medications that release histamine or block DAO can lead to;
* diarrhea,
* headache,
* runny nose,
*blush,
* skin problems,
* respiratory problems (asthma),
* cardiac arrhythmias,
* low blood pressure and even anaphylactic shock.
Symptoms can be reduced by a histamine-free diet and the use of antihistamines.