Items were included on the following lists because they have been reported to contain mercury as an intentional ingredient or component, or as an unintended contaminant. The listings were compiled from multiple sources and were believed to be accurate at the time of posting on this web site. However, users should understand that this information is provided for guidance only and the mercury content of commercial products may be subject to frequent change. Consult with manufacturers and other reputable sources of information, or conduct analyses of products to confirm mercury concentrations. Users should also confirm that alternative products meet all applicable regulatory, protocol and performance requirements before being used in biomedical applications.

Test Procedure, Use or Product Name	Mercury Containing Component or Reagent
Albumin	Milton's reagent
Antinuclear antibody	Buffer
Antifungal/anti-infective/bacteriostatic enzyme/ ammonia	Merthiolate Mercuric nitrate Mercurochrome (Antibiotics are alternatives)
Ammonia Nitrogen	Nessler's solution Channing's solution
Arsenic-Calcium Reagent
Blood Bank Saline	Immuno-sal (Immu-sal?)
Bun Test Enzyme Non-Protein Nitrogen	Nessler's solution
CA 125
Cleaning agent (Commercial Grade)	Trace contaminant in caustic soda (sodium hydroxide)
Chlorides	Mercuric nitrate solution (Use ion-specific electrodes as alternative)
Clostridium difficile EIA
Colorimetric chloride analysis
CPK Reagent
Cytology	Mucolex
Denaturant in single-strand conformation polymorphism (SSCP) analysis of PCR products	Methylmercury hydroxide
Drugs of abuse	All
Epstein Barr virus	Buffer
Fixatives (mordants)	B5 fixative Zenkers solution Hellys Ohlamacher Carnoy-Lebrun Shardin (Zinc formalin, zinc chloride may be a suitable alternatives mercury-based fixatives).
Flame Photometer	Mercuric sulfate (obsolete)
FTA	Buffer
Ganglion cells	Cajal's
Gel electrophoresis	Methylmercury hydroxide
Giardia EIA
Group A Strep ID
Harris hematoxylin	Mercuric oxide oxidizing agent (Alternative is sodium iodate)
Hbft	Alum hematoxylin (solution A)
Hepatitis B core
Hepatitis C
Hepatitis B
Hepatitis B Ag & Ab
Herpes EIA	Buffer
Histology	Mercuric (II) chloride
Histology Stains	Carbol-Fuchin Mercury chloride Carbol Gentian violet Gomori's
HIV
Identification of white cells	Camco
Laboratory chemicals - common mercury compounds	Mercury (II) oxide Mercurous (I) chloride Mercury (II) chloride Mercury iodide Mercury (II) sulfate
Lithium	Cesium Internal Std
Lyme	Buffer
"Metexchange" reagent
Microbiology	Gram iodine stain
Nerve cells, delineation	Golgi's
Parasitology Trichrome stain	Mercuric nitrate solution (Cupric sulfate alternative)
pH	Buffers
Photoprocessing solutions Developers Fixers	Low level mercury contamination
"Precision" reagent
Preservative in pharmaceuticals	Thimerosal Phenylmercuric acetate Phenylmercuric nitrate
Preservative in vaccines: Haemophilus, hepatitis, rabies, tetanus, influenza, diphtheria, and pertussis	Thimerosal
Progesterone
Protein test (Containing hydroxyl phenol group)	Millon's reagent
Protein Precipitation	Methylmercury hydroxide
Sodium/Potassium
Stains	Carbol-Fuchin Gram iodine Mercury chloride Carbol Gentian Violet Gomori's Trichrome
Sulfuric acid (commercial grade)	Mercury (impurity)
Takata-Ara	Takata's reagent
Thyroid antibodies	Buffer
Urinalysis	Stabilur tablets