Mould Allergy Testing
View All TestsWhat Is a Mould Allergy?
A mould allergy is an immune response triggered when a sensitised person inhales airborne mould spores. The immune system may produce IgE antibodies against specific mould proteins, leading to respiratory, nasal, and ocular symptoms. Mould allergies can occur year-round, particularly in damp indoor environments.
Common mould species associated with allergies in the UK include Aspergillus, Cladosporium, Penicillium, and Alternaria. These moulds can be found in bathrooms, kitchens, poorly ventilated buildings, and outdoor environments, particularly during autumn.
Our blood tests measure specific IgE antibodies to mould allergens. Results are provided directly to you to share with your GP or specialist for interpretation and guidance on environmental management.
Where Mould Is Commonly Found
Indoors
- Bathrooms and shower areas
- Kitchens, particularly around sinks
- Air conditioning and HVAC systems
- Basements and areas with poor ventilation
- Window frames with condensation
Outdoors
- Fallen leaves and compost heaps
- Damp woodland and shaded areas
- Agricultural settings
- Areas near rivers and waterways
- Gardens after rainfall
For more on how London's climate affects mould exposure, see our guide on mould allergy symptoms in damp homes.
How Testing Works
Choose Your Test
Select from our range of allergy blood tests and book a convenient time at our South Kensington clinic. No GP referral needed.
Nurse Blood Draw
A qualified nurse takes a small blood sample at our clinic. The appointment is quick and straightforward.
Get Your Results
Results are sent directly to you, typically within a few working days. Share them with your GP or specialist to guide your next steps.
Recommended Tests for Mould Allergy
ALEX² Allergy Test (Venous)
Allergic Rhinitis/Asthma Profile
Allergy Profile 1 (Food & Inhalants)
Alternaria Components
Aspergillus Components
Total IgE
Why Choose a Diagnostic-Only Clinic?
Unlike clinics that provide both testing and treatment, our nurse-led service focuses solely on accurate diagnostic testing. Because we don't offer treatments or prescriptions, there is no commercial incentive to recommend unnecessary tests — just honest, impartial results you can trust.
Nurse-Led & Impartial
Our qualified nurses collect your sample — we don't prescribe, treat, or have any reason to upsell.
Results You Own
Your results are sent directly to you. Take them to your GP or a specialist to discuss what's best for your situation.
You Stay in Control
Understand your allergy profile, then decide with your healthcare professional what steps to take next.
Related Reading
Frequently Asked Questions
Can you be allergic to mould?
Yes, mould allergy is a recognised allergic condition. The immune system may produce IgE antibodies against mould spore proteins, leading to symptoms such as sneezing, nasal congestion, and eye irritation upon exposure.
Is mould allergy worse in certain seasons?
Outdoor mould spore counts tend to peak in autumn when decaying vegetation is most abundant. However, indoor mould can cause year-round symptoms, particularly in damp or poorly ventilated properties.
Which mould species are tested?
Our allergy profiles and the ALEX² test include common allergenic moulds such as Aspergillus fumigatus, Cladosporium herbarum, Alternaria alternata, and Penicillium chrysogenum.
Do I need a GP referral for allergy testing?
No. You can book directly with our clinic without a GP referral. Simply choose your test and select a convenient appointment time. If you're unsure which test is right for your symptoms, our team can help guide your selection.
Do I need to stop taking antihistamines before a blood test?
No. Unlike skin prick testing, IgE blood tests are not affected by antihistamines or other allergy medications. You can continue taking your regular medications before your appointment.
What should I do with my results?
As a diagnostic-only clinic, we provide results directly to you. We recommend sharing them with your GP or an appropriate healthcare professional for interpretation and guidance on environmental management.
Investigate Mould Sensitisation
Book a blood test at our South Kensington clinic
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