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HelpTest Code CRWB Chromium, Blood
Ordering Guidance
Specimen Required
***This specimen container cannot be opened or used for any other testing before shipping.***
Patient Preparation: High concentrations of gadolinium and iodine are known to potentially interfere with most inductively coupled plasma mass spectrometry-based 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 EDTA 3 mL Tube (T989)
Container/Tube: Royal blue-top BD vacutainer with EDTA blood collection tube (3 mL) (T989) (BD catalog no. 367777)
Specimen Volume: 1.0 mL
Collection Instructions:
1. See Metals Analysis Specimen Collection and Transport for complete instructions.
2. Send whole blood specimen in original tube. Do not aliquot.
Useful For
Monitoring exposure to chromium using whole blood specimens
Monitoring metallic prosthetic implant wear
Special Instructions
Reporting Name
Chromium, BSpecimen Type
Whole bloodSpecimen Minimum Volume
0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole blood | Refrigerated (preferred) | 28 days |
| Ambient | 28 days | |
| Frozen | 28 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
| Microtainer | Reject |
Reference Values
0-17 years: Not established
≥18 years: <1.0 ng/mL
Day(s) Performed
Tuesday through Friday
Report Available
1 to 5 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82495
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CRWB | Chromium, B | 5619-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 65601 | Chromium, B | 5619-2 |