Unwellness testing: blood testing for when your labs come back normal

Unwellness testing is for adults who have felt unwell for weeks or months, whose symptoms get in the way of daily life, and whose standard blood tests have come back inside the normal range. The symptoms differ from person to person: fatigue that sleep does not touch, a general sense of malaise, brain fog, pain, a racing heart on standing, or a crash after effort you used to manage without a second thought.

Many people in this position have heard that nothing is wrong. The situation is common: about one in five primary care consultations involve persistent symptoms that doctors cannot explain with standard diagnostic criteria. A normal routine panel means the panel found none of the common causes it looks for. It says little about the immune signalling outside its menu.

For long COVID, the CDC states that no approved laboratory test can determine whether symptoms are due to the condition, and that routine blood tests, chest X-rays and ECGs may be normal. Long COVID comes first in Mune's research. ME/CFS and POTS follow, then autoimmune and brain-body conditions, mental health among them.

An unwellness test reads the proteins that carry immune and inflammatory signals through the blood: cytokines such as IL-6 and TNF-α, interferons such as IFN-γ, chemokines such as IP-10, and markers of mast cell, blood vessel and nervous system activity such as tryptase, VEGF-A and NfL. Mune Mirror™ measures more than 1,000 of these proteins from one at-home sample. The list of what Mune Mirror™ measures shows the eight domains and example markers in each.

Three design choices separate it from a routine panel:

• Breadth. A large study found common lab tests unreliable for diagnosing long COVID (CU Anschutz), while researchers who profiled the immune system across many measures could separate long COVID from recovery at the group level (Klein et al., Nature 2023). In that research the differences appeared as patterns across many measures, and the inflammation markers on a standard panel cover few of them.
• A healthy reference. Mune places each protein against levels measured in healthy people, so you and your doctor can see where each value sits, marker by marker.
• Repetition. The FDA-NIH BEST glossary calls a marker measured at intervals to assess change a monitoring biomarker. One draw gives a snapshot of one day. A series shows direction.

Laboratory methods make this breadth possible. Affinity-based proteomics platforms quantify thousands of protein targets in blood (Nature Communications, 2021), and single-molecule immunoassays have measured cytokines such as IL-6 and TNF-α at concentrations as low as 0.01 to 0.03 pg/mL (2023 assay study).

• A diagnosis. The CDC states that no approved laboratory test can determine whether symptoms are due to long COVID. A 2023 systematic review found no validated diagnostic biomarker for ME/CFS. An unwellness test measures proteins and compares them with a healthy reference; your doctor makes any diagnosis, from your history, an examination and the tests they choose.
• A longevity panel. Longevity and wellness panels read broad menus of routine clinical markers (chemistry, hormones, nutrients and more) by body system, for general health screening. Unwellness testing starts from a different question: what the immune system is doing in someone who feels unwell.
• A test for one condition. A tilt table test records heart rate and blood pressure for POTS, and serum tryptase supports a mast cell activation workup. An unwellness test reads many pathways at the same time and names no condition.
• A replacement for standard care. Standard blood work comes first. The CDC's guidance for clinicians evaluating ME/CFS lists basic screening tests, from a complete blood count to thyroid tests and CRP, to look for other conditions. Those results matter, and a normal one is useful information.

The four approaches answer different questions, and a person with persistent symptoms may meet all of them. The table sets them side by side.

The Mune Mirror™ Baseline Study measures the panel in two groups: 50 people living with long COVID and 300 healthy participants. It starts on 15 October 2026. Each participant gives up to three at-home blood draws and receives their own results.

Healthy, for the study, means no current symptoms, no chronic condition, no regular medication, no past long COVID or other post-viral illness, and an age of 18 or over. Sign-up is an application, and applying does not guarantee a place.

For someone living with long COVID who wants objective data, the study is the next step: if Mune offers you a place, you take part in research that measures people with long COVID beside healthy participants, and you see your own measurements. Read about the Baseline Study and apply.

Mune Mirror™ is Mune Biotech's unwellness test: an at-home blood test that measures 1,000+ proteins with an immune and inflammation focus and benchmarks each one against a healthy reference, and that you repeat over time. You keep a measured record beside your symptom history and bring it to your own doctor.

It names no condition and recommends no treatment. Its job is measurement: where your immune and inflammatory proteins sit, and how they move.

Is unwellness testing a diagnosis?

No. Unwellness testing measures immune and inflammatory proteins and compares them with a healthy reference. It does not diagnose, treat, cure or prevent any disease. A doctor makes a diagnosis from your history, an examination and the tests they choose, and the results are data you can bring to that conversation.

Is there a test for long COVID?

The CDC states that there is no approved laboratory test that can determine whether symptoms are due to long COVID, and routine blood tests may be normal. Research panels measure immune proteins that differ between groups with and without long COVID. The Mune Mirror™ Baseline Study measures people with long COVID beside healthy participants from 15 October 2026.

How is unwellness testing different from a longevity panel?

Longevity and wellness panels read broad menus of routine clinical markers, such as chemistry, hormones and nutrients, across body systems for general health screening. Unwellness testing reads immune and inflammatory proteins in people who feel unwell and whose standard labs are normal, and it repeats the measurement to track change.

Can unwellness testing replace my standard blood work?

No. Standard tests look for common and treatable causes of symptoms, such as anemia or thyroid disease, and they come first. Unwellness testing adds a different layer of measurement once those results are back. Share both with your doctor.

Why retest instead of testing once?

One draw shows where each protein sits on one day. Symptoms and immune signals change across weeks and months. Researchers call a marker measured at intervals to assess change a monitoring biomarker, and a series of results shows a direction that a single result cannot.

What if my symptoms are new or getting worse?

New, severe or worsening symptoms need a medical assessment first, and urgent symptoms need urgent care. Unwellness testing is for persistent symptoms that a standard workup has not explained. It is no way to rule out a serious condition.