Diagnostic Solutions Laboratory Testing for Practitioners: How to Order Through Fullscript
Diagnostic Solutions Laboratory (DSL) specialty testing is now available within Fullscript. Access GI-MAP® and a growing portfolio of gastrointestinal, metabolic, nutritional, immune, and functional health assessments to support patient evaluation.

What is Diagnostic Solutions Laboratory
Diagnostic Solutions Laboratory is a clinical laboratory based in Atlanta, Georgia, that specializes in functional medicine testing, with expertise in gastrointestinal health. Founded to bridge the gap between healthcare providers and laboratory testing, the laboratory develops clinically relevant assessments designed to support personalized patient care.
The laboratory offers testing that helps practitioners evaluate gastrointestinal health, microbiome function, metabolism, nutrition, immune activity, food sensitivities, food allergies, and other biomarkers commonly assessed in functional and integrative medicine. Diagnostic Solutions Laboratory's testing options provide biomarker data that practitioners may review as part of their own assessment and individualized care.
Diagnostic Solutions Laboratory's GI-MAP® utilizes quantitative polymerase chain reaction (qPCR) technology to identify and quantify microbial DNA, allowing practitioners to evaluate bacteria, parasites, viruses, and fungi.
Quick overview
- Founded: 2015
- Specialty: Gastrointestinal, metabolic, immune, and functional health testing
- Use case: Integrative, functional, and gastroenterology care
- Availability: United States (and International)
- Support: Clinical education, interpretation resources, and provider tools
How GI-MAP Is Used in Clinical Practice
The GI-MAP® from Diagnostic Solutions Laboratory is a gut health test that uses quantitative polymerase chain reaction (qPCR) technology to measure microbial DNA from bacteria, parasites, H. pylori, and fungi by targeting specific DNA sequences.
It may be considered as part of a broader gastrointestinal evaluation in patients with contexts such as:
- Digestive symptoms (e.g., bloating, irregular bowel patterns, diarrhea, constipation)
- Nutritional and metabolic patterns
- Fatigue or low energy
- Multi-system or complex presentations
- Baseline gastrointestinal assessment and monitoring
Other testing offered by Diagnostic Solutions Laboratory may provide insight into adverse food reactions, food allergies, metabolic and metabolomic health, and immune function. See below for a complete list of available testing.

Laboratory standards and technology
Tests Offered by Diagnostic Solutions Laboratory
Diagnostic Solutions Laboratory offers testing that evaluates gastrointestinal health, microbiome function, metabolism, nutrition, immune activity, food sensitivities, food allergies, and other functional health biomarkers
GI-MAP®
Zonulin Add-On (GI-MAP add-on)
StoolOMX™ Add-On (GI-MAP add-on that evaluates short chain fatty acids and bile acids)
Universal Antibiotic Resistance Genes Add-On (GI-MAP add-on)
Fecal Gluten Peptide (Identifies gluten exposure)
H. pylori Profile
Pathogens Panel
Organic Acids Profile™
OMX™ Organic Metabolomics
Fatty Acids Profile™
Amino Acids Profile™
CytoDX™ Cytokine Response Profile
IgG Food Explorer™
IgE Food Explorer™
Histamine Clearance Index™ (evaluates how well the body clears histamine)
Frequently Ordered Tests from Diagnostic Solutions Laboratory
GI-MAP®
A stool-based test that evaluates gastrointestinal microbiota using qPCR technology.
Includes measurement of bacteria, parasites, viruses, and fungi, as well as markers related to digestion, inflammation, and gut health.
Often considered in the evaluation of digestive symptoms or when microbiome assessment is clinically relevant.
GI-MAP® with Zonulin
An expanded version of the GI-MAP that includes zonulin, a biomarker associated with intestinal permeability in research settings.
Often considered when additional context related to gut barrier function is being evaluated.
GI-MAP® Turnaround Times
Turnaround times may vary and are not guaranteed*
Commonly used test | Specimen | Typical turnaround | |
|---|---|---|---|
| GI symptoms / microbiome assessment | GI-MAP® | Stool | ~7–10 days |
| Expanded gut assessment | GI-MAP® + Zonulin | Stool | ~7–10 days |
Why Order Diagnostic Solutions Laboratory Tests Through Fullscript
Fullscript allows practitioners to incorporate Diagnostic Solutions testing into an existing workflow:
Streamline the lab ordering process within your existing clinical workflow
Ship test kits directly to patients
Review results alongside other patient data
Access pricing before ordering
Manage follow-up workflows in one place
How to Order Testing from Diagnostic Solutions Laboratory
Create a Fullscript account
Add a test from Diagnostic Solutions Laboratory to a patient plan
Patients receive a collection kit with instructions
Review results within your Fullscript dashboard
Frequently Asked Questions about Testing from Diagnostic Solutions Laboratory
Key takeaways
- Diagnostic Solutions Laboratory offers testing that evaluates gastrointestinal health, microbiome function, metabolism, nutrition, immune activity, and food-related immune responses.
- The laboratory utilizes molecular testing methodologies, including qPCR-based microbial DNA analysis and metabolomic, immunologic, and biomarker-based assessments.
- GI-MAP® is one of the laboratory's most widely used tests and provides gastrointestinal microbial and microbiome assessment.
- Diagnostic Solutions reports are organized for practitioner review through organized biomarker categories, reference ranges, graphical summaries, and educational resources.
- Practitioners can order Diagnostic Solutions Laboratory testing directly through Fullscript and manage testing within an integrated clinical workflow.

Start ordering Diagnostic Solutions Laboratory tests
Create a Fullscript account to access testing from Diagnostic Solutions Laboratory
This educational content is intended for healthcare practitioners and should be interpreted within the context of clinical judgment and individual patient needs