- People with persistent diarrhea, pain, bleeding, weight loss, anemia or compatible symptoms
- People with exposure or medication history that creates a specific question
- People referred through a clinician who can act on abnormal results
Standard of care
TEST PASSPORT · REVIEWED JULY 2026
Symptom-directed GI testing
Choose the test from the symptom pattern: celiac, H. pylori, inflammation, infection or malabsorption.GI testing works when it answers a defined question. A clinician may use celiac serology, H. pylori testing, fecal calprotectin, pathogen testing or other targeted studies—never one universal gut panel.
ACCESSAt homeBlood, breath or stool depending on question
TURNAROUNDSeveral days to 2 weeksProvider and location dependent
RELATIVE COST$$–$$$Total downstream cost matters
COMMERCE STATUSClinician pathwaySymptom intake + targeted order + clinician result review
HOW TO USE THIS PAGE
Decide whether this test deserves a place in your plan.
- 01Confirm the question
Be clear about what decision the result would change before ordering.
- 02Check fit and preparation
Review who it helps, who should pause and how to protect the quality of the signal.
- 03Plan the response
Know what you will do with a normal, abnormal or unclear result.
01 / WHO SHOULD TAKE IT
Fit the test to
the person.
Testing is useful when the result can change a real decision. These are educational selection criteria, not a diagnosis or personal order.- Annual broad stool panels in symptom-free people
- Treating every detected organism
- Starting a restrictive diet before celiac testing is complete
02 / SIGNAL VS. STORY
What it tells you.
What it cannot.
01
Evidence for the specific condition the ordered test targets
02
Inflammatory versus functional clues
03
Whether endoscopy, treatment or further evaluation may be needed
01
Each test has timing, medication and diet requirements
02
Detection does not always mean causation
03
Alarm symptoms may require direct evaluation rather than a mail-in panel
03 / MARKERS + RANGES
Read the panel
without chasing flags.
The report should show its own method, units and laboratory reference interval. Clinical decision thresholds may be different from a lab interval. We do not invent a universal “optimal” range where authoritative guidance does not support one.Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
MEN, WOMEN + LIFE-STAGE CONTEXT
The correct range is personal context—not pink versus blue numbers.
Where biology differs, we call it out. Clinical interpretation should also reflect organs present, hormone therapy, pregnancy, age, medications and health history.
Pregnancy, endometriosis, pelvic-floor conditions and iron loss can overlap with GI symptoms.
Iron deficiency and rectal bleeding still need cause-first evaluation; do not default to a wellness stool panel.
04 / PREPARATION
Protect the quality
of the signal.
The best assay cannot rescue the wrong timing, wrong specimen or wrong question. Follow the ordering clinician and laboratory instructions when they differ from this general guide.Ask before stopping gluten, acid suppressors, antibiotics or other medicines; timing can change accuracy.
Record duration, stool pattern, weight change, travel, medications and family history.
Follow temperature, timing and contamination instructions exactly.
REPEAT CADENCEOnce per diagnostic question; repeat only for validated test-of-cure or disease-monitoring reasons.
05 / AFTER THE RESULT
Turn the number
into a next step.
- 01
Act on the specific result—not the whole marketing report
- 02
Use endoscopy or imaging when the clinical pathway calls for it
- 03
Avoid unnecessary antimicrobials
DO NOT WAIT ON A CONSUMER TEST
Black/bloody stool, severe pain, persistent vomiting or dehydration
Unintentional weight loss, progressive swallowing difficulty or significant anemia
06 / MODERN BIO SELECT
Built for a responsible purchase path.
The commercial product is navigation to the right test, not a maximal panel.Symptom-directed GI testing
- Future format
- Symptom intake + targeted order + clinician result review
- Price position
- Test-specific transparent price
- Before checkout
- Eligibility · method · privacy · total cost · interpretation · abnormal-result routing
07 / SCIENTIFIC FOUNDATION