Skip to content

Bcinereaigeigetotal

Published: August 9, 2026Updated: August 16, 2026

This blood test measures specific IgE antibodies to Botrytis cinerea (gray mold fungus) and total IgE levels to help diagnose mold-related allergies.

Quick summary

{"Tests for allergic reaction to Botrytis cinerea, a common mold found on plants","Requires a simple blood draw, no special preparation needed","Results help doctors diagnose mold allergies and guide treatment"}

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
61231-7
Short code
BOTRYTIS
Synonyms
B cinerea IgE/IgE total %
Category
chemistry
Sample
serum
Container
Serum separator tube (SST) or red-top tube
Units
N/A
Ref low
0
Ref high
0.35
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
Immunoassay (Fluorescent Enzyme Immunoassay / FEIA)
CPT
86003
SNOMED
39579001
Specimen volume
1.0 mL serum
Stability
Stable for 7 days at 2-8°C; for longer storage, freeze at -20°C or below for up to 1 year. Avoid repeated freeze-thaw cycles.
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
24–72 hours
Order
routine

What is this test?

The Botrytis cinerea IgE test is a blood test that measures two things: (1) specific IgE antibodies to Botrytis cinerea, a fungus commonly known as gray mold or noble rot, and (2) total IgE levels in your blood. Botrytis cinerea is a widespread plant pathogen that affects many crops and can be found in gardens, greenhouses, and agricultural settings.

How is the test performed?

A healthcare professional will draw a small blood sample from a vein in your arm. The sample is then sent to a laboratory for analysis. No special preparation, such as fasting, is typically required before this test.

What do the results mean?

Positive results for Botrytis cinerea-specific IgE indicate that you may have an allergy to this mold. Elevated total IgE levels may suggest an allergic condition or other immune-related issues. Your doctor will interpret these results along with your symptoms and medical history to make an accurate diagnosis.

Reference range

Class 0: <0.35 kU/L (Negative); Class 1: 0.35-0.70 kU/L (Equivocal); Class 2: 0.71-3.50 kU/L (Positive); Class 3: 3.51-17.50 kU/L (Positive); Class 4: 17.51-50.00 kU/L (Strongly Positive); Class 5: 50.01-100.00 kU/L (Strongly Positive); Class 6: >100.00 kU/L (Strongly Positive)N/A

Specimen: serum

No fasting required. Patient should inform the laboratory of any current antihistamine or corticosteroid use, as these medications may affect IgE antibody levels and test interpretation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Who should consider this test?
Individuals experiencing allergy symptoms such as nasal congestion, sneezing, itchy eyes, wheezing, or skin rashes after exposure to moldy plants, gardens, greenhouses, or floral environments may benefit from this test. It is especially useful for people working in agriculture, horticulture, or flower industries.
Is the test safe?
Yes, this is a standard blood test with minimal risks, including slight bruising or soreness at the injection site. Unlike skin prick tests, there is no risk of triggering a severe allergic reaction during the test.
How long does it take to get results?
Results are typically available within a few days to a week, depending on the laboratory's processing time.
What happens if the test is positive?
A positive result suggests a mold allergy. Your doctor may recommend allergy medications, avoidance strategies, or immunotherapy (allergy shots) to help manage your symptoms.
  1. 1
  2. 2

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy