How to Test for Heavy Metals
Provoked urine test is gold standard for body burden. Blood shows recent exposure only. Hair shows trends but is controversial. Each test type answers different questions.
Test Types Compared
| Test | Shows | Limitations |
|---|---|---|
| Provoked Urine | Body burden (what's stored) | Requires chelator, can cause symptoms |
| Blood | Recent exposure (days-weeks) | Misses stored metals |
| Hair | Average exposure (months) | Controversial accuracy |
| Unprovoked Urine | Current excretion | Underestimates body burden |
| Stool | GI excretion, some metals | Limited scope |
Provoked Urine Test (Gold Standard)
You take a chelating agent (DMSA, DMPS, or EDTA), which pulls metals out of tissue. Then collect urine for 6-24 hours. This shows what's actually stored in your body.
- • Labs: Doctor's Data, Genova, Quicksilver Scientific
- • Requires: Prescription for chelator (DMSA usually)
- • Cost: $200-400 including chelator
- • Caution: Can cause symptoms — have binders on hand
Hair Tissue Mineral Analysis (HTMA)
Hair grows ~1 inch per month, so a sample shows ~3 months of exposure. Controversial because hair can be contaminated externally (shampoos, water) and some metals don't deposit in hair proportionally.
- • Best for: Tracking trends over time, mineral ratios
- • Labs: Trace Elements Inc, Doctor's Data
- • Cost: $100-200
- • No prescription needed
Which Test to Start With
- Suspected acute exposure: Blood test (doctor can order)
- General screening: HTMA (easy, affordable)
- Before chelation protocol: Provoked urine (baseline)
- During protocol: Repeat provoked urine every 3-6 months