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Bloodworm-Specific IgE Antibody, Serum — Qualitative (Deprecated)

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

A qualitative blood test that looks for IgE antibodies directed against bloodworm allergens. The test name is marked as deprecated.

Quick summary

["A positive result suggests an immune response to bloodworm allergens, but it does not by itself confirm an active infection."]

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

Key facts at a glance

LOINC
15582-0
Short code
Deprecated Bloodworm IgE RAST Ql
Synonyms
Deprecated Bloodworm 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 blood test checks for allergen-specific IgE antibodies associated with bloodworms. It is reported as positive, negative, or sometimes indeterminate. This test designation is deprecated, so a current equivalent may need to be ordered.

Why might I need this test?

A clinician may order it when symptoms suggest an allergic response after exposure to bloodworms or related parasites. It can also be used as part of an evaluation for unexplained allergic symptoms or suspected parasite exposure.

How is the test performed?

A blood sample is collected and analyzed in the laboratory for bloodworm-specific IgE antibodies. Qualitative testing generally provides a positive or negative interpretation rather than a numeric measurement.

How do I prepare for the test?

No special preparation is usually required, and fasting is generally unnecessary. Follow the instructions provided by your clinician or laboratory and tell the healthcare team about any allergic reactions you have had.

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

Bloodworm IgE test

Frequently asked questions

Does a positive bloodworm IgE result mean I have an active worm infection?
No. It indicates an immune response to bloodworm allergens, which can occur with allergy or previous exposure and is not proof of an active infection.
What symptoms might lead a clinician to order this test?
This test may be considered for symptoms such as hives, swelling, wheezing, or other allergic reactions following exposure to soil, food, or materials contaminated with parasites.
Why is this test marked deprecated?
The test designation is no longer current, which may mean it is unavailable or has been replaced by another laboratory method. Ask the ordering clinician or laboratory about the appropriate current test.
  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