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Test Code HG Mercury, Blood

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Whole blood


Specimen Required


Patient Preparation: 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.

Supplies: Metal Free B-D Tube (EDTA), 6 mL (T183)

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

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


Specimen Minimum Volume

0.3 mL

Specimen Stability Information

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

Reference Values

Normal: <10 ng/mL

Reference values apply to all ages.

Day(s) and Time(s) Performed

Monday through Saturday; 2 p.m.

CPT Code Information

83825

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)