TP Root Cause Infections Panel
This blood test panel bundles key infection and immune-response markers to help interpret past exposure, recent infection signals, and vaccine titers.
This panel bundles multiple biomarker tests in one order—your report explains how results fit together.
This is a lab panel, meaning you get multiple infection- and immunity-related results from one order. It is designed for situations where you need more than a single “positive/negative” answer—such as chronic fatigue workups, post-viral symptoms, documentation of vaccine titers, or clarifying whether a past exposure is likely relevant right now.
Because the panel includes different types of tests (for example, antibody patterns and general immune markers), the most useful interpretation comes from how results fit together, your symptoms, and timing of illness or vaccination. This panel supports clinician-directed care and informed follow-up, not self-diagnosis.
Do I need this panel?
You may consider the TP Root Cause Infections Panel if you are trying to make sense of persistent or relapsing symptoms—especially fatigue, brain fog, sore throat, swollen glands, recurrent respiratory infections, prolonged recovery after a virus, or unexplained “crashes” after exertion. A single test rarely explains these patterns. A panel can show whether your immune system looks like it is responding to a recent infection, reflecting past exposure, or showing weaker-than-expected vaccine response for certain pathogens.
This panel can also be helpful when you need documentation of immunity for school, work, travel, or medical programs. In those cases, the goal is usually clear: confirm protective titers (or identify gaps) by the deadline, and decide whether revaccination or repeat testing is appropriate.
If your main question is “Am I contagious right now?” a blood antibody panel is often not the best first step. For acute symptoms (fever, new cough, sore throat, sudden onset), time-sensitive swab-based PCR testing can be more informative early on. This panel is best when your question is broader: what infections have you likely encountered, how does your immune response look, and what follow-up testing makes sense based on the pattern.
This panel may combine immunoassays (antibody testing) and other blood-based measurements; reference ranges and clinical interpretation can vary by lab and by timing of infection or vaccination.
Lab testing
Order labs to measure TP - Root Cause Infections Panel
from $1,534.25 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 panel with Vitals Vault
Vitals Vault makes it straightforward to order a multi-marker lab panel when you want a structured view of infection and immune-response signals without piecing together separate tests. You can use this panel to establish a baseline, clarify confusing prior results (like “IgG positive” without context), or document titers for a requirement.
After you receive your results, the next step is making them actionable. Because infection testing is timing-dependent, interpretation usually hinges on details like when symptoms started, whether you were recently vaccinated, and whether you have conditions or medications that affect immunity. PocketMD can help you translate the pattern across the panel into practical next questions (for example, whether repeat testing, a PCR swab, or an add-on inflammation panel would better match your situation).
If you are tracking recovery or response over time, repeating the same panel can be useful—especially when you keep timing consistent (for example, retesting 6–12 weeks later) and interpret changes alongside symptoms rather than chasing a single number.
- One order covers multiple related markers so you can interpret patterns, not isolated results
- Clear next-step guidance for common scenarios like IgG vs IgM confusion and titer documentation
- Designed for trending when you need a baseline and a follow-up snapshot
Key benefits of the TP Root Cause Infections Panel
- Clarifies whether results look more like past exposure, recent immune activation, or a mixed pattern that needs follow-up timing.
- Reduces “IgG positive vs IgM negative” confusion by encouraging interpretation across multiple complementary markers rather than one flag.
- Supports vaccine titer documentation by checking immunity patterns that can guide revaccination or repeat testing decisions.
- Helps prioritize next-step testing (for example, PCR swabs during acute symptoms versus repeat serology later).
- Provides a structured baseline for post-viral symptom investigations where multiple infections and immune responses can overlap.
- Improves conversations with your clinician by organizing results into a coherent story (timing, exposure, and immune response strength).
- Makes it easier to track change over time when you repeat the same panel after recovery, treatment, or vaccination.
What is the TP Root Cause Infections Panel?
The TP Root Cause Infections Panel is a bundled lab panel that looks at multiple blood-based markers related to infections and your immune response. Instead of relying on a single “positive/negative” result, it combines tests that can point toward (1) evidence of prior exposure, (2) signs that your immune system has been activated more recently, and (3) how robustly you appear to respond to certain vaccines or pathogens.
Many infection tests in blood are antibody tests. Antibodies are proteins your immune system makes after exposure to a virus or bacteria (or after vaccination). Different antibody classes and targets can mean different things. For example, IgM antibodies often rise earlier in an infection, while IgG antibodies tend to appear later and can remain detectable for years. Some infections also have multiple antibody targets (different viral proteins), and the pattern across those targets can be more informative than any single marker.
A key limitation is timing: antibody patterns evolve over days to weeks, and they do not always tell you whether a pathogen is currently active in your body. That is why this panel is most useful when you interpret it alongside your symptom timeline, recent vaccinations, and any immune-modifying medications or conditions.
Depending on what is included in your specific order, the panel may cover common post-viral questions (such as Epstein–Barr virus, EBV) and immunity documentation needs (such as pneumococcal antibody titers). The goal is not to “prove a root cause” from one lab draw, but to give you a well-rounded snapshot that supports smarter follow-up.
What do my panel results mean?
Low or absent signals across the panel
If many infection-related markers are negative or low, it can mean you have no evidence of prior exposure to those specific pathogens, your immune response has waned over time, or you were tested at a time when antibodies have not yet developed. In titer-focused situations, low protective antibodies may suggest you are not adequately immunized (or that immunity has decreased), which can matter for school or work requirements. If you tested very early in an illness, low antibody results do not rule out infection; a PCR swab or repeat serology after an appropriate interval may be more informative.
Reassuring patterns (consistent with past exposure and stable immunity)
A common “reassuring” panel pattern is antibodies that suggest past exposure without strong signs of recent immune activation, alongside titers that meet expected protective thresholds when documentation is the goal. In this context, your results may support the idea that a prior infection happened in the past and is not the most likely explanation for current symptoms—especially if there is no compatible timing or if other parts of your health workup point elsewhere. Even with reassuring results, persistent symptoms can still be real and worth evaluating; the panel simply helps narrow which infection pathways are less likely to be driving the picture.
High signals or patterns that suggest recent immune activation
When multiple markers are elevated or show a pattern consistent with more recent immune activity (for example, certain early-phase antibodies, rising titers, or a combination of targets that fits a recent exposure), it may point toward a recent infection, re-exposure, or an immune system that is currently “on alert.” This does not automatically mean you have an active, ongoing infection that requires treatment. High antibody levels can also reflect a strong past immune response, recent vaccination, or non-specific immune activation. The most useful next step is usually to match the pattern to your timeline and consider confirmatory testing (such as repeat titers to look for change, or PCR testing if symptoms are acute).
Factors that influence infection and immunity markers on this panel
Your results can shift based on timing (how many days or weeks since symptom onset or vaccination), age, and immune status. Immunosuppressive medications, immune deficiencies, pregnancy, and certain chronic conditions can blunt antibody responses and lead to lower titers than expected. Recent vaccination can raise specific antibodies and may be mistaken for infection if timing is not considered. Lab methods and reference ranges also differ, so “positive,” “equivocal,” and “protective” cutoffs are not always interchangeable between labs. If you have long-lasting symptoms after a viral illness (including long COVID), it is also common for infection markers to be only part of the story; pairing this panel with inflammation, coagulation, or organ-function testing may better reflect what is driving how you feel.
What’s included in this panel
- 18 KD (IGG) BAND
- 23 KD (IGG) BAND
- 23 KD (IGM) BAND
- 28 KD (IGG) BAND
- 30 KD (IGG) BAND
- 39 KD (IGG) BAND
- 39 KD (IGM) BAND
- 41 KD (IGG) BAND
- 41 KD (IGM) BAND
- 45 KD (IGG) BAND
- 58 KD (IGG) BAND
- 66 KD (IGG) BAND
- 93 KD (IGG) BAND
- B. Henselae Ab (Igg), Screen
- B. Henselae Ab (Igm), Screen
- B. Quintana Ab (Igg), Screen
- B. Quintana Ab (Igm), Screen
- Babesia Microti Ab (Igg)
- Babesia Microti Ab (Igm)
- Cytomegalovirus Antibody (Igg)
- Cytomegalovirus Antibody (Igm)
- Ebv Early Antigen D Ab (Igg)
- Ebv Nuclear Ag (Ebna) Ab (Igg)
- Ebv Viral Capsid Ag (Vca) Ab (Igg)
- Ebv Viral Capsid Ag (Vca) Ab (Igm)
- Hsv 1 Igg, Type Specific Ab
- Hsv 2 Igg Inhibition, Ia
- Hsv 2 Igg, Type Specific Ab
- Lyme Ab Screen
- LYME DISEASE AB(IGG),BLOT
- LYME DISEASE AB(IGM),BLOT
Similar tests and panels to consider
Frequently Asked Questions
Do I need to fast for the TP Root Cause Infections Panel?
Fasting is usually not required for most antibody tests. However, some versions of this panel may include markers that can be affected by recent meals (or you may be combining it with other labs). If you want the cleanest baseline and are unsure, a morning draw after an overnight fast is a reasonable default, unless your clinician or the lab instructions say otherwise.
What is the difference between IgG and IgM on infection tests?
IgM antibodies often rise earlier after a new infection and tend to decline sooner, while IgG antibodies usually appear later and can remain detectable long-term. That said, the timing is not perfect for every pathogen or every person. A single IgG-positive result often indicates past exposure, not necessarily an active infection, and the most accurate interpretation comes from the full pattern across the panel and your symptom timeline.
Can this panel tell me if I have an active infection right now?
Not reliably on its own. Many components are antibody-based, which reflect immune response rather than direct detection of a pathogen. If you have acute symptoms and need to know what is currently causing them, a PCR swab panel (for respiratory viruses, for example) is often more time-sensitive. This panel is better for understanding exposure history, immune response patterns, and whether follow-up testing is warranted.
Why would my titers be low even if I was vaccinated?
Protective antibody levels can wane over time, and some people mount a weaker response due to age, immune conditions, or immune-modifying medications. Lab cutoffs and methods also vary. If titers are low and documentation is required, common next steps include revaccination (when appropriate) and repeat titers after the recommended interval to confirm response.
How should I interpret EBV results if I have chronic fatigue or post-viral symptoms?
EBV serology can be confusing because many adults have evidence of past EBV exposure. Patterns across VCA IgM, VCA IgG, EBNA IgG, and early antigen antibodies can suggest timing (recent vs past), but they do not prove that EBV is the cause of current symptoms. If your pattern suggests recent infection or reactivation, it is usually interpreted alongside symptoms, other labs (like CBC and inflammation markers), and sometimes repeat testing to see whether values are changing.
Is it better to order this as a panel or pick individual tests?
A panel is often more useful when your question is broad—such as “what infection or immune patterns could be contributing?”—because it reduces the chance that you over-weight one isolated result. Individual tests can be appropriate when you have a specific, time-sensitive question (for example, a targeted PCR swab during acute symptoms) or when you are following a known diagnosis with a clinician.
When should I repeat the panel?
Repeat timing depends on why you tested. For titer documentation after vaccination, repeat testing is often done after the recommended window to confirm antibody response. For post-viral or chronic symptom investigations, repeating in roughly 6–12 weeks can help you see whether a signal is stable, rising, or fading—especially if you keep the context consistent (similar health status, similar timing relative to illness or vaccination).