Clinics and Departments

Laboratory Services

Lab Dept:

Urine/Stool

Test Name:

IRON, URINE

General Information

Lab Order Codes:

FEUR

Synonyms:

Fe, Iron; Fe, 24 hour, Urine

CPT Codes:

83540 – Iron

Test Includes:

Urine iron measured in mcg/specimen

Logistics

Test Indications:

Diagnosis of hemochromatosis, hemolytic anemia, paroxsysmal nocturnal hemoglobinuria, and impaired biliary clearance.

Lab Testing Sections:

Urine Stool - Sendouts

Referred to:

Mayo Medical Laboratories (Test: FEU/8571)

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

1 – 6 days, test performed Monday and Friday

Special Instructions:

See Container

Specimen

Specimen Type:

24 hour urine collection

Container:

Clean, plastic urine container with no metal caps with no preservative. Keep specimen refrigerated or on ice during the collection period.

Draw Volume:

Entire collection

Processed Volume:

10 mL (Minimum: 0.5 mL) aliquot from 24 hour urine

Collection:

24 hour urine collection

Special Processing:

Lab Staff: Mix entire collection well. Measure entire volume and record. Remove a 10 mL urine aliquot from the 24 hour collection and put into a plastic 13 mL urine tube. This container should have no metal caps or inserts. The specimen should be refrigerated within 4 hours of completion. Ship the specimen at refrigerated temperatures. Forward promptly.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimens

Interpretive

Reference Range:

0 – 15 years:

Not established

>or =16 years

100-300 mcg/specimen

Critical Values:

N/A

Limitations:

High concentrations of gadolinium and iodine are known to interfere with most metal tests. If gadolinium or iodine-containing contrast media has been administered, a specimen cannot be collected for 96 hours.

Methodology:

Inductively Coupled Plasma (ICP) Emission Spectroscopy (OES)

References:

Mayo Medical Laboratories May 2013



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