Diamine oxidase (DAO) in the blood

Information on the diamine oxidase (DAO) test

This lab test measures the activity of diamine oxidase (DAO) in the blood . DAO is an enzyme that plays a central role in the breakdown of histamine . A reduced DAO level may be associated with impaired histamine processing.

The test is frequently used in the context of clarifying histamine intolerance (histaminosis) and provides an objective laboratory value for further classification.

When is the test useful?

Determining DAO activity may be considered if impaired histamine processing is suspected , particularly in cases of:

• suspected histamine intolerance
• Food intolerances of unclear cause
• recurring, nonspecific symptoms after consuming histamine-containing foods

The test serves as a guide and supports further clarification and does not replace a medical assessment.

Contextualization

DAO measurement is one component in the assessment of histamine metabolism. Additional laboratory parameters may be useful to better understand the overall picture. Depending on the specific questions being addressed, further testing for histamine intolerance may be considered.

Implementation and evaluation

This test requires a blood sample . The analysis is performed in a laboratory .

If you live nearby, please feel free to contact us. We can inform you about locations where blood can be drawn in your area . Alternatively, you can contact a healthcare professional you trust .

Result and classification

The test result can provide information about DAO activity and histamine breakdown .
In case of an abnormal or unclear result, it is recommended to contact a medical professional for further clarification .

Further information on the topic of histamine intolerance can be helpful for a more in-depth understanding and can be found here .

Scope of delivery and execution