Test Code LAB967 Chromium, Serum
Additional Codes
Mayo Test ID |
---|
CRS |
45268
Reporting Name
Chromium, SUseful For
Screening for occupational exposure
Monitoring metallic prosthetic implant wear
Performing Laboratory
Mayo Clinic Laboratories in RochesterSpecimen Type
SerumOrdering Guidance
The US Food and Drug Administration recommended test for monitoring chromium in patients with metal-on-metal implants is CRWB / Chromium, Blood.
Specimen Required
Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metal tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.
Supplies: Metal Free Specimen Vial (T173)
Collection Container/Tube: Plain, royal blue-top Vacutainer plastic trace element blood collection tube
Submission Container/Tube: 7-mL Mayo metal-free, screw-capped, polypropylene vial
Specimen Volume: 0.5 mL
Collection Instructions:
1. Allow the 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 Metals Analysis Specimen Collection and Transport for complete instructions.
Specimen Minimum Volume
0.3 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 28 days | METAL FREE |
Ambient | 28 days | METAL FREE | |
Frozen | 28 days | METAL FREE |
Special Instructions
Reference Values
<0.3 ng/mL
When collected by a phlebotomist experienced in ultra-clean collection technique and handled according to the instructions in Metals Analysis Specimen Collection and Transport, we have observed the concentration of chromium in serum to be below 0.3 ng/mL. However, the majority of specimens submitted for analysis from unexposed individuals contain 0.3 ng/mL to 0.9 ng/mL of chromium. Commercial evacuated blood collection tubes not designed for trace-metal specimen collection yield serum containing 2.0 ng/mL to 5.0 ng/mL chromium derived from the collection tube.
Day(s) Performed
Tuesday, Wednesday, Friday
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
82495
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
CRS | Chromium, S | 5622-6 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
8638 | Chromium, S | 5622-6 |
Report Available
1 to 4 daysMethod Name
Inductively Coupled Plasma-Mass Spectometry (DRC-ICP-MS)