ARUP's Laboratory Test Directory

Chromium, Urine : 0025068

Mnemonic: CR-U

Methodology: Inductively Coupled Plasma/Mass Spectrometry
Performed: Tue, Fri
Reported: 1-5 days
Specimen Required: Patient Prep:  Diet, medication, and nutritional supplements may introduce interfering substances.  Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, nonessential over-the-counter medications (upon the advice of their physician), and avoid shellfish and seafood for 48 to 72 hours.

Collect:  24-hour or random urine collection. Specimen must be collected in a plastic container and should be refrigerated during collection. ARUP studies indicate that refrigeration of urine alone, during and after collection, preserves specimens adequately, if tested within 14 days of collection.

Storage/Transport Temperature:  10 mL aliquot from a well-mixed collection at 2-8°C (Min: 5 mL). Submit specimen in two ARUP Trace Element-Free Transport Tubes (ARUP supply #43116).

Remarks:  Record total volume and collection time interval on transport tube and on test request form.

Unacceptable Conditions:  Urine collected within 48 hours after administration of a gadolinium (Gd) containing contrast media (may occur with MRI studies). Acid preserved urine.

Stability (collection to initiation of testing):  Ambient: 1 week;  Refrigerated (preferred): 2 weeks; Frozen: 1 year
Reference Interval:
 
Test Number Components Reference Interval
 Chromium, Urine0.0-5.0 µg/L
 Chromium, Urine (24-hour) 0.0-6.0 µg/d
 Chromium per gram of creatinineNo reference interval (µg/g crt)
0020473Creatinine, 24-Hour Urine  
 
Male Female
3-8 years:      140-700 mg/d
9-12 years:    300-1300 mg/d
13-17 years:  500-2300 mg/d
18-50 years:  1000-2500 mg/d
51-80 years:  800-2100 mg/d
81 years and older: 600-2000 mg/d
3-8 years:      140-700 mg/d
9-12 years:    300-1300 mg/d
13-17 years:  400-1600 mg/d
18-50 years:  700-1600 mg/d
51-80 years:  500-1400 mg/d
81 years and older: 400-1300 mg/d

CPT Code(s): 82495
Cross References: Cr, Urine
 
 

 

 

 
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