Find Locations
For hours, walk-ins and appointments.Synonyms
- Al, Urine
Test Includes
Aluminum, urine; creatinine, urine; aluminum:creatinine ratio; aluminum, urine (24-hour)
Special Instructions
Do not use preservative. Preservatives used for routine analysis may contain mercuric oxide (ie, Stabilur), which interferes with all metal testing. If both urinalysis and metal testing are ordered, please submit a separate urine specimen (containing no additive) for the metal testing.
Expected Turnaround Time
2 - 4 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Information
Related Documents
Specimen Requirements
Specimen
Urine (random or 24-hour)
Volume
5 mL
Minimum Volume
1.5 mL
Container
Plastic urine container, no preservative
Collection
Optional protocol: Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). Avoid contact with metal during collection. Screw the lid on securely.
Storage Instructions
Maintain specimen at room temperature.
Stability Requirements
Temperature | Period |
|---|---|
Room temperature | 14 days |
Refrigerated | 14 days |
Frozen | 14 days |
Freeze/thaw cycles | Stable x3 |
Test Details
Use
Monitor patients for prior and ongoing exposure to aluminum. Patients at risk include:
• Infants on parenteral fluids, particularly parenteral nutrition
• Burn patients through administration of intravenous albumin, particularly with coexisting renal failure
• Adult and pediatric patients with chronic renal failure who accumulate aluminum readily from medications and dialysate
• Adult parenteral nutrition patients (less so, recently)
• Patients with industrial exposure
Monitor dialysate and water to prepare dialysate to prevent aluminum toxicity in dialysis patients.
Limitations
This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.
Methodology
Inductively coupled plasma/mass spectrometry (ICP/MS)
Reference Interval
• Environmental exposure: 5−30 μg/L, 0−32 μg/24 hours
• Aluminum:creatinine ratio: <50 μg/g creatinine
• Occupational exposure: 150 μg/g creatinine (collected at end of shift)1
Footnotes
1. Lauwerys RR, Hoet P, Industrial Chemical Exposure: Guidelines for Biological Monitoring, 2nd ed, Boca Raton, FL: Lewis Publishers, 1993, 290.
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 071555 | Aluminum, Urine | 071557 | Aluminum, Urine | ug/L | 6929-4 | |
| 071555 | Aluminum, Urine | 723280 | Creatinine(Crt),U | g/L | 2161-8 | |
| 071555 | Aluminum, Urine | 071560 | Aluminum/Crt Ratio | ug/g creat | 13470-0 | |
| 071555 | Aluminum, Urine | 071559 | Aluminum,Urine 24 Hr | ug/24 hr | 26707-0 |
© 2021 Laboratory Corporation of America® Holdings and Lexi-Comp Inc. All Rights Reserved.
CPT Statement/Profile Statement
The LOINC® codes are copyright © 1994-2021, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf