Test Details

Mnemonic

ITISS

Ordering Code

3801000

CPT-4 Code(s)

83540

Specimen Information

Collect

Liver tissue

Specimen Preparation

Send a piece of tissue at least 2.0 cm long, if using a 22-gauge needle. If an 18-gauge needle is used, the tissue must be at least 1 cm in length. Send in a screw capped plastic container.

Alternate Specimen

Paraffin block is acceptable if not more than 1 or 2 cuts have been made to it for slides.

Minimum Volume

2.0 mg

Transport Temperature

Refrigerated

Stability

Room temperature: 3 days
Refrigerated: 1 month
Frozen: 1 month

Methodology

Dynamic Reaction Cell-Inductively Coupled Plasma-Mass Spoectrometry
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Reference Range

Males: 200-2400 mcg/g dry weight
Females: 200-1,800 mcg/g dry weight
Iron Index: <1.0 mcmol/g/year (≥13 years)

Reference values have not been established for patients that are less than 13 years of age.
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Performing Laboratory

MAYO
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New York DOH Approval Status

Yes
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