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Lab Test Dictionary

Copper, Liver Tissue (CUT)


Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)


Wilson's Disease

Specimen Type


Performing Lab

Mayo Medical Lab

Epic ID

Other Reference Test

Lab Test Days

Monday and Thursday

Standard TAT

3-6 Days

Collection Information

Specimen Required

2 cm Liver Biopsy Tissue or 2 mg Tissue in Paraffin Block (if no more than 1-2 cutes have been made to it for slides)

Container Type

Royal Blue (No Additive)

Collection Instructions

Collect 2 cm Liver Biopsy tissue in a (royal blue-top) Trace Metal Free tube. Paraffin block or fixed tissue is also acceptable. 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.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: Indefinitely (Unacceptable for Fresh Tissue); Refrigerated: Indefinitely (10 Days for Fresh Tissue); Frozen: Indefinitely (Unacceptable for Fresh Tissue)

Test Volume Required

5 mg Liver Biopsy Tissue

Minimum Test Volume

2 mg Liver Biopsy Tissue

CPT Codes