Skip to content

Grass Allergen Mix 5-Specific IgE, Serum

Published: August 9, 2026Updated: August 17, 2026

Measures IgE antibodies to a mixture of five grass allergens in your blood to help assess possible grass-pollen allergy sensitization.

Quick summary

["A detectable result can indicate sensitization to one or more tested grass allergens, but it must be interpreted with your symptoms and exposure history."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
82567-9
Short code
Grass Allerg Mix5 IgE RAST
Synonyms
Grass Allerg Mix5 IgE RAST
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
multidisk
CPT
84484
SNOMED
302774002
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

This blood test measures allergen-specific IgE antibodies against a laboratory-defined mixture of five grass allergens. IgE is an immune-system protein that can form in response to exposure to allergens.

Why might I need this test?

Your clinician may order this test if you have sneezing, congestion, watery eyes, wheezing, or other symptoms associated with grass pollen exposure. It can help identify whether your symptoms may be related to an allergy to one or more tested grass allergens.

How is the test performed?

A blood sample is drawn and separated to obtain serum. The laboratory then uses an immunoassay to measure IgE directed against the grass allergens included in the mix.

How do I prepare for the test?

No special preparation is usually required. Tell your clinician about your symptoms, recent allergen exposure, allergies, and medications, and do not stop prescribed medicines unless instructed.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Grass allergy antibody test

Frequently asked questions

Does a positive result mean I am allergic to grass?
It indicates that your immune system has produced IgE antibodies to one or more tested grass allergens. Your clinician must interpret this with your symptoms and exposure history to determine whether it represents a clinical allergy.
What symptoms can grass-pollen allergy cause?
Common symptoms include sneezing, runny or stuffy nose, itchy or watery eyes, cough, and wheezing. Symptoms may occur during outdoor activities or when exposed to cut grass.
Can I take allergy medicines before this test?
This blood test generally does not require stopping antihistamines or other medicines. Discuss any medication concerns with the ordering clinician, especially if additional allergy testing or interpretation is planned.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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 17, 2026. · Read our editorial policy