01 / EXPOSURE HISTORY
Exposure History
Identify plausible sources and reduce ongoing exposure. Environmental assessment may answer a different question from measuring a chemical in the body.
Functional laboratory education
The Detox Lab Edit
The first question is exposure. Air, water, food, work, and household products offer a more useful starting point than assuming that every symptom reflects a hidden toxin burden.
Begin with the foundations
A question before a panel.
Begin with the question, then choose the test. Food, sleep, movement, connection, oral care, and relevant environmental changes remain the foundation. Laboratory work is most useful when a finding could change a decision.
02 / LIVER & KIDNEY CONTEXT
Liver & Kidney Context
Clinically appropriate blood and urine tests may assess organ function. They do not measure a general 'detox capacity' or prove that a supplement is clearing toxins.
03 / TARGETED METALS
Targeted Metals
Choose the specimen and assay for the suspected metal and exposure. Detectable levels do not necessarily establish toxicity. Provoked urine results cannot be compared with unprovoked reference ranges.
04 / PFAS
Pfas
PFAS blood testing can document selected compounds when exposure history supports a discussion. It does not identify the source or establish a treatment plan by itself.
The tests in this collection.
Quest Diagnostics
Heavy Metals Panel (Venous)
- What it measures
- Arsenic, lead, and mercury in venous blood.
- Why it is here · When it may be useful
- An occupational, household, dietary, or environmental history suggests exposure to one of the measured metals.
- What ordering involves
- Whole blood from a blood draw. Follow the instructions supplied with the exact order. Fasting and medication timing may change when tests are combined.
- Keep in mind
- Interpret with the reason for testing, symptoms, medical history, and the laboratory method. An isolated result is not a diagnosis.
Test information & references
Quest Diagnostics
Heavy Metals Panel, 24-Hour Urine
- What it measures
- Selected metals excreted in urine over a complete 24-hour collection.
- Why it is here · When it may be useful
- A specific exposure question requires assessment of metal excretion over a full day.
- What ordering involves
- Complete 24-hour urine collection using the laboratory container. Follow the exact start/stop and storage instructions. Incomplete collection affects results; do not add a chelation challenge.
- Keep in mind
- Excretion over one day is not total body burden. Recent exposures and specimen handling matter.
Test information & references
RealTime Labs
Environmental Toxins Panel
- What it measures
- Selected environmental chemical metabolites in a urine specimen.
- Why it is here · When it may be useful
- A relevant exposure history supports a discussion about whether measured urinary chemical metabolites would change practical exposure reduction.
- What ordering involves
- Urine collected with the at-home kit. Use the RealTime Labs urine kit and its current collection, storage, and shipping instructions. Do not substitute blood-collection instructions.
- Keep in mind
- A spot urine finding reflects the substances measured and recent exposure or excretion. It does not establish total body burden, locate the source, or prove the cause of symptoms.
Test information & references
Access Labcorp Draw
Arsenic, Lead, Mercury, Random Urine
- What it measures
- Arsenic, lead, and mercury in a random urine sample.
- Why it is here · When it may be useful
- The exposure history points toward arsenic, lead, or mercury and the selected specimen fits the clinical question.
- What ordering involves
- Random urine sample collected according to the order instructions. Follow the exact assay instructions and disclose recent seafood intake when arsenic is measured. Do not add a chelation challenge.
- Keep in mind
- Speciation may be needed to distinguish arsenic forms. Concentration and recent exposure affect urine findings; results are not a total toxin burden.
Test information & references
Quest Diagnostics
PFAS (FOREVER CHEM) 9
- What it measures
- Nine per- and polyfluoroalkyl substances and the reported combined concentration.
- Why it is here · When it may be useful
- A credible exposure history makes a PFAS measurement useful for an informed exposure-reduction conversation.
- What ordering involves
- Serum from a blood draw. Follow the instructions supplied with the exact order. Fasting and medication timing may change when tests are combined.
- Keep in mind
- The result cannot identify the exposure source, attribute symptoms, predict individual disease, or establish a treatment by itself.
Test information & references
A closer look
What the findings can tell us.
Collect with intention.
Use validated, unprovoked collection for metal evaluation. PFAS testing generally uses serum; follow the chosen laboratory's instructions.
Keep the limits in view.
A toxin result cannot by itself explain all symptoms. Chelator-challenge testing is not validated for diagnosing metal toxicity, and indiscriminate treatment can cause harm.
Results belong within your history, symptoms, examination, medications, and the laboratory's method. A reference interval is not a universal target for every person. There is no single validated set of 'optimal' values that applies across all assays and life stages.
Availability, ordering requirements, collection fees, and eligibility vary by test and location. Review the current Fullscript listing and your clinician's instructions before purchasing.
VIEW THE LAB COLLECTION ON FULLSCRIPTGood questions. Thoughtful answers.
Do I need every test in this guide?
No. Choose a test only when its result may change a useful decision, taking existing results, symptoms and your budget into account.
Does an out-of-range result identify the root cause?
Not by itself. Interpretation depends on the assay, collection, history and the pattern across findings. A result can be one clue without being the explanation.
Where can I see ordering requirements?
Open the individual Fullscript listing for current availability, specimen instructions and eligibility. A collection may include alternatives rather than tests intended to be purchased together.
Related reading.
Research & references
Educational information, not an individualized order or interpretation. Purchases through my storefront may financially support my practice.
The Foundations · My gift to you
Return to the ground
your body knows.
Before protocols. Before supplements. Begin with water, nourishment, breath, and the everyday environment that supports your health.
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