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Test ID: FET    
Iron, Liver Tissue

Specimen Type Describes the specimen type needed for testing

Liver Tissue

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Container/Tube:

Preferred: Mayo metal-free specimen vial (blue label) (Supply T173)

Acceptable: Paraffin block, if not more than 1 or 2 cuts have been made to it for slides.

Specimen Volume: 2 mg

Collection Instructions:

1. Two mg of liver tissue is required. This is typically a piece of tissue from a 22-gauge needle biopsy at least 2 cm long. If an 18-gauge needle is used, the tissue must be at least 1 cm in length.

2. Any specimen vial other than a Mayo metal-free vial used should be plastic, leached with 10% nitric acid for 2 days, rinsed with redistilled water, and dried in clean air.

Additional Information:

1. Patient's date of birth is required to calculate iron index.

2. If tissue is other than liver tissue, see MSCM / Miscellaneous Metals Testing.

3. Paraffin blocks will be returned 3 days after analysis.

Forms: If not ordering electronically, submit a General Request Form (Supply T239) with the specimen.

Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.

2 cm (22-gauge needle), 1 cm (18-gauge needle), or 2 mm x 2 mm (punch) 0.3 mg by dry weight

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Hemolysis

NA

Lipemia

NA

Icterus

NA

Other

NA

 

 

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.

Specimen TypeTemperatureTime
Liver TissueRefrigerated (preferred)
 Ambient 
 Frozen