Three Cadence staff members reviewing results around a monitor
Test catalog
CDX-METALFunctional

Heavy Metals Panel

Blood and urine toxic-element screen for lead, mercury, arsenic, cadmium, and more.

Sample type

Blood + urine

Turnaround

5 days

Reported

Physician-reviewed

What this panel measures

  • Blood lead — ongoing exposure and recent uptake
  • Whole-blood mercury, arsenic, and cadmium
  • Urine elements for clearance and chelation monitoring

Why providers order it

  • Occupational exposure (construction, welding, battery work, dentistry)
  • Unexplained symptoms: numbness, fatigue, cognitive changes, or chronic headaches
  • Living in older homes with lead paint or old plumbing
  • Monitoring chelation therapy
How to prepare

Avoid fish and shellfish for 48–72 hours beforehand — seafood can temporarily raise arsenic and mercury readings. Tell your provider about any supplements or herbal products.

Heavy Metals Panel: frequently asked questions

Why avoid seafood before a heavy metals test?

Fish and shellfish contain a harmless organic arsenic that standard testing cannot distinguish from toxic inorganic arsenic. Skipping seafood for 48–72 hours prevents a false alarm.

Blood or urine for metal testing?

Blood reflects recent and ongoing exposure; urine reflects what your body is clearing. Our panel can use both so your provider can see exposure and excretion together.

How long do results take?

Heavy metals results are typically reported within 5 days and physician-reviewed before release.

This page is educational and does not replace medical advice. Testing decisions should be reviewed with a licensed provider.