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Candida albicans-Specific IgE Antibody (RAST), Qualitative — Deprecated

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

A legacy blood test that looks for IgE antibodies to Candida albicans, which may indicate allergic sensitization to this fungus.

Quick summary

["A positive result suggests Candida-specific IgE sensitization but does not by itself confirm a clinical allergy."]

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

Key facts at a glance

LOINC
15599-4
Short code
Deprecated C albicans IgE RAST Ql
Synonyms
Deprecated C albicans IgE RAST Ql
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
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 qualitative test looks for IgE antibodies directed against Candida albicans, a fungus that commonly lives on the skin and in the digestive tract. It is a RAST-type allergy test and is considered deprecated, meaning it is generally no longer routinely offered.

Why might I need this test?

It may have been used to help evaluate possible Candida allergy when a person had symptoms suggestive of an allergic reaction. Results must be considered alongside the symptoms, medical history, and other allergy testing.

How is the test performed?

A blood sample is usually tested with Candida albicans allergen in the laboratory. The test reports whether Candida-specific IgE antibodies were detected, rather than providing a quantitative measurement.

How do I prepare for the test?

Fasting is usually not required. Antihistamines and certain other medicines can affect allergy testing, so tell your clinician about all medicines and supplements; do not stop any prescribed medicine 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

Candida albicans IgE antibody test

Frequently asked questions

Does a positive result mean I have a Candida infection?
No. This test looks for allergic antibodies, not for the organism itself. A positive result indicates possible sensitization and must be interpreted in the context of symptoms.
What symptoms might lead to this test being considered?
It may be considered for symptoms such as recurrent hives, swelling, wheezing, or other reactions that appear related to Candida exposure. The test is not usually used to diagnose a routine yeast infection.
Why is this test marked as deprecated?
It is a legacy test and is no longer routinely used in many laboratories. Your clinician may use newer allergy tests or other methods to evaluate suspected allergic reactions.
  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