Blood Worm (I73) IgE Biomarker Testing
It measures IgE antibodies to bloodworm (I73) to help assess allergy sensitization, with easy ordering and clear results through Vitals Vault/Quest.
With Vitals Vault, you have access to a comprehensive range of biomarker tests.
A Blood Worm (I73) IgE test looks for allergy-type antibodies in your blood that are directed at bloodworm proteins. Bloodworms are used as fishing bait and can also show up indirectly in some occupational or hobby exposures.
This test does not “prove” you have an allergy on its own. Instead, it helps answer a narrower question: have you become sensitized (made IgE) to bloodworm, and could that sensitization fit with your symptoms and exposure history?
If you have had hives, itching, swelling, wheezing, or other reactions after handling bait, being around bait shops, or working with aquatic organisms, a targeted IgE result can help you and your clinician decide what to avoid and what follow-up testing makes sense.
Do I need a Blood Worm I73 IgE test?
You may want this test if you get allergy-like symptoms after handling bloodworms or being in environments where bloodworm material could become airborne. Common patterns include itchy skin or hives after contact, sneezing or runny nose in a bait shop, or coughing/wheezing during or after exposure.
This test can also be useful if you have recurring symptoms that seem tied to a specific setting (for example, fishing trips, aquarium work, or certain jobs) and you are trying to identify a trigger. A positive result can support a practical plan such as exposure reduction, workplace controls, or targeted medical follow-up.
You may not need this test if your symptoms are clearly explained by another diagnosis (such as a viral illness) or if you have no meaningful exposure to bloodworms. If you have had a severe reaction (trouble breathing, fainting, throat tightness), treat that as urgent and discuss an emergency plan with a clinician; lab testing is for risk assessment and planning, not self-diagnosis.
This is a laboratory-developed, CLIA-validated specific IgE blood test used to assess sensitization; results must be interpreted with your symptoms and exposure history and are not a standalone diagnosis.
Lab testing
Order labs to measure Blood Worm (i73) IgE
from $44.99 at Quest Diagnostics
About 1 week
Schedule online — results typically within a week
Clear next steps
Guidance included, with follow-up care available
HSA / FSA
Eligible for pre-tax health spending accounts
Get this test with Vitals Vault
Vitals Vault makes it straightforward to order a Blood Worm (I73) IgE test when you and your clinician want objective data to match against your real-world exposures. You can order your lab work, visit a local draw site, and then review your results in one place.
If your result is confusing or you are not sure what to do next, PocketMD can help you turn the number into a plan to discuss with your clinician. That usually means checking whether the result fits your symptom timing, deciding what avoidance steps are realistic, and identifying companion tests that can clarify cross-reactivity or broader allergy patterns.
If you are tracking changes over time (for example, after reducing exposure), you can also use Vitals Vault to reorder and compare results so you are not relying on memory alone.
- Order online and complete your blood draw at a participating lab location
- PocketMD guidance to prepare questions and next steps for your clinician
- Easy re-testing to trend results when exposure or symptoms change
Key benefits of Blood Worm I73 IgE testing
- Helps identify whether your immune system has made IgE antibodies to bloodworm (I73).
- Supports safer exposure decisions if you handle fishing bait, work in bait shops, or have similar occupational contact.
- Adds objective context when symptoms are intermittent and tied to specific environments.
- Can help separate sensitization to bloodworm from more common triggers like dust mites, pollens, or pet dander.
- Guides follow-up testing for related allergens when cross-reactivity is suspected.
- Helps you and your clinician decide whether avoidance alone is reasonable or whether specialist evaluation is warranted.
- Makes it easier to track patterns over time alongside symptoms using Vitals Vault results history and PocketMD.
What is Blood Worm I73 IgE?
Blood Worm (I73) IgE is a “specific IgE” blood test. It measures the amount of immunoglobulin E (IgE) antibodies in your blood that bind to proteins from bloodworm. IgE is the antibody class most associated with immediate-type allergic reactions, such as hives, swelling, nasal symptoms, and asthma-like symptoms.
A key point is that IgE reflects sensitization, not certainty of clinical allergy. Some people have detectable IgE but never develop symptoms with real-world exposure, while others have symptoms with relatively low levels. That is why your history matters: what you were exposed to, how quickly symptoms started, and whether symptoms repeat with similar exposures.
Bloodworm exposure is often practical and situational (bait handling, bait storage, cleaning equipment, or being in enclosed spaces where particles can become airborne). For some people, skin contact is the main issue; for others, inhalation of aerosolized material can trigger nasal or breathing symptoms.
IgE sensitization vs. allergy
Sensitization means your immune system recognizes an allergen and has produced IgE against it. Allergy means sensitization plus consistent symptoms when you are exposed. Your result is most useful when it is interpreted alongside your symptom pattern and any other allergy testing your clinician recommends.
Why a targeted test can matter
If your symptoms show up in a specific setting—like a bait shop or during fishing trips—a targeted IgE test can be more actionable than broad screening alone. It can help you focus on the exposures that are most likely to explain what you are experiencing.
What do my Blood Worm I73 IgE results mean?
Low or undetectable Blood Worm (I73) IgE
A low or undetectable result means the test did not find meaningful IgE sensitization to bloodworm at the time of testing. This makes an IgE-mediated bloodworm allergy less likely, but it does not completely rule it out, especially if your exposure was remote or your symptoms are not classic immediate reactions. If your symptoms persist, your clinician may look for other triggers (environmental allergens, irritants, or non-IgE mechanisms) or consider broader allergy testing.
In-range results (interpreted in context)
For specific IgE tests, “normal” is often reported as negative/low rather than a wellness-style optimal range. If your result is negative or very low and you also do not have clear exposure-linked symptoms, that combination is reassuring. If you do have consistent symptoms with exposure, a low result may prompt a discussion about timing of testing, alternative allergens, or whether your symptoms are more consistent with irritation than allergy.
High Blood Worm (I73) IgE
A higher result suggests stronger sensitization to bloodworm. The higher the IgE, the more plausible it is that bloodworm exposure could be contributing to your symptoms, but the number alone does not predict reaction severity. If you have had systemic symptoms (wheezing, widespread hives, swelling, dizziness), bring the result to your clinician promptly to discuss avoidance strategies and whether you need an allergy specialist evaluation.
Factors that influence Blood Worm (I73) IgE
Your result can be influenced by how recently and how often you are exposed, since ongoing exposure can maintain sensitization. Cross-reactivity can also play a role, where IgE made to one organism binds to similar proteins in another, which can complicate interpretation. Total IgE levels, other active allergies, and asthma or eczema can raise the background likelihood of positive specific IgE tests. Medications like antihistamines do not typically suppress blood IgE results, but clinical context and repeat testing timing still matter.
What’s included
- Blood Worm (I73) Ige
Similar or related tests
Frequently Asked Questions
What does the Blood Worm (I73) IgE test measure?
It measures specific IgE antibodies in your blood that bind to bloodworm proteins. This helps assess whether you are sensitized to bloodworm, which can be relevant if you have symptoms after handling bait or being around bait-related environments.
Do I need to fast for a Blood Worm IgE test?
Fasting is not usually required for specific IgE blood testing. If you are combining this with other labs that do require fasting, follow the instructions for the full set of tests you ordered.
Can this test diagnose a bloodworm allergy?
It cannot diagnose allergy by itself. A positive result supports sensitization, but diagnosis depends on whether your symptoms reliably occur with exposure and how your clinician weighs your history, exam, and any additional testing.
What is considered a “high” Blood Worm (I73) IgE level?
Labs may report results as a numeric value and/or a class (for example, negative vs. increasing classes of positivity). “High” generally means clearly above the lab’s reference cutoff, but the clinical meaning depends on your symptoms and exposure; higher numbers do not automatically mean more severe reactions.
If my result is negative, can I still react to bloodworms?
Yes, it is possible. A negative specific IgE makes an IgE-mediated reaction less likely, but symptoms can come from irritation, non-IgE mechanisms, or a different allergen in the same environment. If your reactions are consistent, discuss next steps with your clinician.
How soon should I retest if I change my exposure?
There is no single schedule that fits everyone, but retesting is often most useful after a sustained change in exposure or symptoms rather than within days. Many people discuss a several-month window with their clinician so the result has time to reflect a meaningful shift.
What other tests are commonly ordered with Blood Worm (I73) IgE?
Companion testing depends on your situation. Your clinician may consider other specific IgE tests for suspected cross-reactive or co-exposure allergens, and sometimes broader health labs if symptoms like fatigue or weight change suggest a non-allergy cause.