US BioTek testing for practitioners: how to order through Fullscript
Access US BioTek testing within Fullscript. Order food-specific antibody, inhalant, and Candida testing as part of your clinical workflow, alongside supplement recommendations.
Create a Fullscript account to access US BioTek testing

What is US BioTek?
US BioTek is a clinical laboratory specializing in immunology and antibody testing, including food-specific antibody, inhalant, and Candida panels.
The laboratory offers blood-based assays designed to measure antibody responses to a range of antigens. Depending on the panel selected, testing may evaluate IgA, IgG, IgG4, or combinations of these immunoglobulins.
Testing is ordered by licensed healthcare practitioners and is intended to provide additional laboratory data that can be interpreted alongside a patient's history, symptoms, and other clinical findings.
Quick overview
- Specialty: Food-specific antibody and immunology testing
- Use case: Integrative, functional, and primary care settings
- Specimens: Dried blood spot and/or serum, depending on the test
- Support: Provider education, interpretation tools, and clinical resources
How US BioTek tests are used in clinical practice
US BioTek testing may be considered when a practitioner wants additional information about antibody reactivity to specific foods, inhalants, or Candida antigens.
Clinical contexts may include:
- Evaluation of food-specific antibody patterns
- Evaluation of inhalant-specific antibody patterns
- Investigation of Candida-specific antibody responses
- Support for dietary assessment planning
- Baseline antibody assessment and follow-up monitoring
Test selection should be guided by the patient's history, clinical presentation, and the specific question the practitioner is trying to answer.
Importantly, food-specific IgA, IgG, or IgG4 findings should not be interpreted in isolation as a diagnosis of food allergy, food intolerance, or food-triggered disease.

Laboratory standards and technology
Types of US BioTek tests
US BioTek testing spans several areas of antibody and immune-response assessment, including:
Food-specific antibody testing
Multi-isotype food panels
Inhalant antibody testing
Candida antibody testing
Featured US BioTek tests
96 General Food Panel: IgA/IgG
The 96 General Food Panel: IgA/IgG evaluates IgA and IgG antibody reactivity to a broad selection of foods.
Testing multiple antibody classes provides practitioners with laboratory data about different aspects of the patient's antibody response to the foods included in the panel.
It may be considered when a practitioner wants to assess food-specific IgA and IgG patterns as one component of a broader dietary and clinical evaluation.
Antibody classes: IgA and IgG
Clinical focus: Food-specific antibody reactivity
144 Food Panel: IgA/IgG/IgG4
The 144 Food Panel: IgA/IgG/IgG4 provides a broader food panel while evaluating three antibody classes: IgA, IgG, and IgG4.
It may be considered when a practitioner wants a more extensive assessment of food-specific antibody patterns across multiple immunoglobulin classes.
Results should be interpreted alongside dietary history, symptoms, and other relevant clinical findings rather than used independently to diagnose a food allergy or intolerance.
Antibody classes: IgA, IgG, and IgG4
Clinical focus: Broad food-specific antibody assessment
48 Inhalant Panel: IgA/IgG/IgG4
The 48 Inhalant Panel: IgA/IgG/IgG4 evaluates antibody responses to a panel of inhalant antigens across IgA, IgG, and IgG4.
This panel may provide additional information when a practitioner is investigating immune-response patterns associated with inhalant exposures.
Because IgA, IgG, and IgG4 testing is distinct from IgE-mediated allergy testing, findings should be interpreted according to the antibodies measured and within the patient's broader clinical context.
Antibody classes: IgA, IgG, and IgG4
Clinical focus: Inhalant-specific antibody reactivity
Candida Full Panel
The Candida Full Panel evaluates antibody responses associated with Candida.
It may be considered when a practitioner wants additional immune-response data related to Candida as part of a broader clinical assessment.
Antibody findings should be interpreted alongside the patient's history, signs and symptoms, physical examination, and other appropriate diagnostic testing. Antibody testing alone should not be used to establish invasive or localized candidiasis.
Clinical focus: Candida-related antibody response

Choosing a US BioTek test
The clinical question can help guide test selection.
For food-specific IgA and IgG antibody patterns across a general food panel:
Consider the 96 General Food Panel: IgA/IgG.
For a broader food panel incorporating IgA, IgG, and IgG4:
Consider the 144 Food Panel: IgA/IgG/IgG4.
For IgA, IgG, and IgG4 responses to inhalant antigens:
Consider the 48 Inhalant Panel: IgA/IgG/IgG4.
For Candida-related antibody assessment:
Consider the Candida Full Panel.
The appropriate panel depends on the patient's history, clinical presentation, and assessment goals.
Understanding IgA, IgG, and IgG4 testing
US BioTek's featured panels evaluate several antibody classes.
IgA is an immunoglobulin associated prominently with mucosal immune responses.
IgG is a major circulating immunoglobulin involved in immune recognition and response to antigens.
IgG4 is one of the subclasses of IgG and has distinct immunologic characteristics.
Measuring antigen-specific antibodies can provide information about immune recognition and antibody-response patterns. However, detecting these antibodies does not by itself demonstrate that exposure to a particular food or inhalant is responsible for a patient's symptoms.
These panels should therefore be interpreted as one component of the overall clinical assessment rather than as standalone diagnostic tests for food allergy or intolerance.

Why order US BioTek tests through Fullscript?
Fullscript allows practitioners to incorporate US BioTek testing into an existing clinical workflow. With Fullscript, practitioners can:
Order laboratory testing and provide supplement recommendations within the same platform
Send test kits or requisitions to patients
Review results alongside other patient information
Access pricing information before ordering
Manage laboratory and follow-up workflows within a single system
How to order US BioTek tests
Create a Fullscript account
Select a US BioTek test and add it to the patient's plan
Send the plan to the patient
The patient receives instructions for payment and sample collection
Review available results within Fullscript and interpret them alongside the patient's history and other clinical findings
Use the findings to inform follow-up, as clinically appropriate
Frequently asked questions about US BioTek testing
Key takeaways
- US BioTek provides specialty immunology and antibody testing.
- Featured tests include the 96 General Food Panel: IgA/IgG, 144 Food Panel: IgA/IgG/IgG4, 48 Inhalant Panel: IgA/IgG/IgG4, and Candida Full Panel.
- Panels can assess different combinations of IgA, IgG, and IgG4 antibodies to food or inhalant antigens.
- Antigen-specific IgA, IgG, and IgG4 results should not be interpreted independently as a diagnosis of food allergy, intolerance, or other food-triggered disease.
- Candida antibody results likewise require interpretation within the broader clinical context.
- Test selection should be guided by the patient's presentation and the practitioner's assessment goals.
- Fullscript enables practitioners to incorporate US BioTek testing into their broader clinical workflow

Start ordering US BioTek tests
Access US BioTek testing through Fullscript and manage testing as part of your existing patient workflow.