Assessing Your Current Exposure

You cannot fix what you do not measure. Most parents dramatically underestimate their family's toxin exposure because the sources are invisible.

Two Types of Testing

Environmental testing measures what's in your water, air, and products—your potential exposure.

Biomarker testing measures what's actually in your body—your actual burden.

Both matter. Environmental testing guides prevention. Biomarker testing confirms whether prevention is working.

Understanding Biomarker Tests

Blood testing shows recent or ongoing exposure. Many toxins don't stay in blood long—they redistribute to tissues. A "normal" blood lead doesn't mean low total burden.

Urine testing shows what the body is actively excreting. Low values could mean low exposure (good) or poor excretion (bad).

Hair testing captures 2-3 months of exposure history. Quality varies dramatically between labs—use reputable ones.

Provoked testing uses a chelation agent to mobilize stored toxins. Can reveal hidden burden that standard tests miss.

Home Water Assessment

Water is usually the highest-impact area because you interact with it constantly.

Step 1: Get your water utility report. Look for:

• Lead levels (AAP recommends <1 ppb; EPA allows 15 ppb)
• Fluoride levels (typically 0.7 ppm in fluoridated areas)
• Arsenic (EPA allows 10 ppb; harm seen below that)

Step 2: Test your actual tap water. Utility reports measure water leaving the plant, not what comes from your faucet. Lead enters from pipes between the main and your tap.

Lead Paint Assessment

Pre-1978 homes almost certainly contain lead paint. The question is whether it's a current hazard.

Risk factors: deteriorating paint, friction surfaces (windows, doors), renovation activity, young children who mouth objects.

Establishing Your Baseline

Document everything: water test results, any biomarker testing, current products in use, dietary patterns. This becomes your reference point for measuring improvement.