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Test Code MERCURY WB Mercury, Blood

Reporting Name

Mercury, B

Useful For

Detecting mercury toxicity

Specimen Required

Container/Tube: Royal blue-top (EDTA) Vacutainer plastic trace element blood collection tube (T183)

Specimen Volume: Full tube

Collection Instructions:

1. See Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.

2. Send specimen in original tube.

Additional Information:

1. High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.

2. If ordering the trace element blood collection tube from BD, order catalog #368381.

Specimen Type

Whole blood

Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Whole blood Refrigerated (preferred) 28 days
  Ambient  28 days
  Frozen  28 days

Day(s) and Time(s) Performed

Monday through Saturday; 2 p.m.

Performing Laboratory

Mayo Medical Laboratories in Rochester

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Method Description

Arsenic (As), cadmium (Cd), mercury (Hg), and lead (Pb) are analyzed by ICP-MS in kinetic energy discrimination (KED) mode using helium as a nonreactive gas to collide with polyatomic interferences such as argon chloride (ArCl). Internal standards used are gallium (Ga) for As, rhodium (Rh) for Cd, and lutetium (Lu) and iridium (Ir) summed for Hg and Pb. A salt matrix calibration is used.(Nixon DE, Burritt MF, Moyer TP: The determination of mercury in whole blood and urine by inductively coupled plasma mass spectrometry. Spectrochimica Acta Part B-Atomic Spectroscopy 1999; 54: 1141-1153; Hanley MM, Eckdahl SJ, Kiedrowski B, et al: A comparison of methods for attenuation of oxide interferences in cadmium and mercury analysis by ICP-MS [Paper 38169]. 38th Federation of Analytical Chemistry and Spectroscopy Societies, Reno, NV, October 2-6, 2011)

Reference Values

Normal: 0-9 ng/mL

Reference values apply to all ages.

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
HG Mercury, B In Process


Result ID Test Result Name Result LOINC Value
8618 Mercury, B 5685-3

Reject Due To


Mild OK; Gross OK


Mild OK; Gross OK


Mild OK; Gross OK


Green-top (heparin) tube