Home
HelpTest Code CHRTI Chromosome Analysis, Skin Biopsy
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| _M15A | Metaphases, 1-14 | No, (Bill Only) | No |
| _M19 | Metaphases, 15-20 | No, (Bill Only) | No |
| _MG19 | Metaphases, >20 | No, (Bill Only) | No |
| _KTG2 | Karyotypes, >2 | No, (Bill Only) | No |
| _STAC | Ag-Nor/CBL Stain | No, (Bill Only) | No |
Specimen Type
TissueShipping Instructions
Advise Express Mail or equivalent if not on courier service.
Necessary Information
Provide a reason for testing with each specimen. The laboratory will not reject testing if this information is not provided, but appropriate testing and interpretation may be compromised or delayed.
Specimen Required
Specimen Type: Skin biopsy
Container/Tube: Sterile container with sterile RPMI transport media, Ringer's solution, or normal saline-RPMI transport media (T095-Petri dish is not needed for this test).
Specimen Volume: 4 mm diameter
Collection Instructions:
1. Wash biopsy site with an antiseptic soap.
2. Thoroughly rinse area with sterile water.
3. Do not use alcohol or iodine preparations.
4. A local anesthetic may be used.
5. Biopsy specimens are best taken by punch biopsy to include full thickness of dermis.
Specimen Minimum Volume
4 mm punch biopsy
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Tissue | Refrigerated (preferred) | ||
| Ambient | |||
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
An interpretative report will be provided.
Day(s) Performed
Monday through Friday
Report Available
23 to 24 daysSpecimen Retention Time
4 weeksPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
88233, 88291- Tissue culture for skin/biopsy, Interpretation and report
88262 w/modifier 52-Chromosome analysis less than 15 cells(if appropriate)
88262-Chromosome analysis with 15 to 120 cells (if appropriate)
88262, 88285-Chromosome analysis with greater than 20 cells (if appropriate)
88280-Chromosome analysis, greater than 2 karyotypes (if appropriate)
88283-Additional specialized banding technique (if appropriate)