Chemical warning signs or early signs of mercury toxicity include the following, according to an expert in the subject:

• A white blood cell count above 7,500 or below 4,500
• Hematocrit above 50% or below 40% • A lymphocyte count above 2,800 or below 1,800.
• A blood protein level above 7.5 grams per 100 milliliters.
• A blood triglyceride level above 150 mg percent ml.
• A blood urea nitrogen (BUN) level above 18 or below 12 percent.
• A blood oxyhemoglobin below 55 percent saturation.
• A blood carboxyhemoglobin above 2.5 percent saturation.
• A blood T-lymphocyte count below 2,000 per cubic millimeter (normal range is 2,200 to 2,400).
• A level of nickel in the hair above 1.5 part per million (ppm).
• A hair mercury level above 1.5 ppm or below 0.4 ppm.
• A hair aluminum level above 15 ppm.
• A hair manganese level below 0.3 ppm.
• Immune reactions to aluminum, nickel, mercury, copper or gold.
• DNA analysis: mercury can cause two DNA chains to combine, doubling the number of chromosomes present from 48 to 96. By definition, this is malignancy.