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Diamine Oxidase Activity LIS Code: Diamine Oxidase

Assess DAO enzyme activity to diagnose histamine intolerance. Fast private testing available.

→ 15 days → UKAS-accredited lab → No GP referral needed

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Test Price

£85

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Results in

15 days

from sample receipt at lab

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Sample

Blood

£85

CHOOSE COLLECTION METHOD

Clinic blood draw + £25

Visit Slough, Victoria or Neasden.

Nurse home visit from £50

£50 within 10 miles of Slough, then £2 per extra mile.

Order an at-home kit

⏱ Results in 15 days · LIS: Diamine Oxidase

ℹ️ TAT begins when your sample is received at our lab.

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Phlebotomy Fee: £25

A one-off £25 phlebotomy fee applies per visit — this covers your blood draw regardless of how many tests you book in the same appointment.

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What is Diamine Oxidase (DAO)?

Diamine oxidase (DAO) is an enzyme produced by the body that helps break down histamine found in certain foods.

Function of DAO

DAO plays a crucial role in metabolizing dietary histamine, helping to maintain healthy histamine levels and prevent adverse reactions.