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Test Code MOLPS Molybdenum, Serum

Reporting Name

Molybdenum, S

Useful For

Monitoring of parenteral nutrition

 

Monitoring metallic prosthetic implant wear

 

As an indicator of molybdenum cofactor disease

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Serum


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 (No Additive), 6 mL (T184)

Metal Free Specimen Vial (T173)

Collection Container/Tube: Plain, royal blue-top Vacutainer plastic trace element blood collection tube (T184)

Submission Container/Tube: 7-mL Mayo metal-free, screw-capped, polypropylene vial (T173)

Specimen Volume: 1.6 mL

Collection Instructions:

1. Allow specimen to clot for 30 minutes; then centrifuge the specimen to separate serum from the cellular fraction.

2. Remove the stopper. Carefully pour specimen into a Mayo metal-free, polypropylene vial, avoiding transfer of the cellular components of blood. Do not insert a pipet into the serum to accomplish transfer, and do not ream the specimen with a wooden stick to assist with serum transfer.

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


Seattle Children's Hospital Note:

Processing Note: Use of a standard pipette is acceptable for aliquoting these samples.

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Ambient  14 days
  Frozen  14 days

Reference Values

0.3-2.0 ng/mL

Day(s) and Time(s) Performed

Wednesday; 8 a.m.

Seattle Children's Hospital Note:

TAT: 3 - 9 days

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

83018

LOINC Code Information

Test ID Test Order Name Order LOINC Value
MOLPS Molybdenum, S 5698-6

 

Result ID Test Result Name Result LOINC Value
89270 Molybdenum, S 5698-6

Method Description

Molybdenum (Mo) in serum is analyzed by ICP-MS in standard mode using rhodium (Rh) as an internal standard and a salt matrix calibration.(Unpublished Mayo method)

Reject Due To

Hemolysis

Mild OK; Gross OK

Lipemia

Mild OK; Gross OK

Icterus

Mild OK; Gross OK

Other

NA

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)