Test ID: 88501
Renal Pathology Consultation
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.
Useful For Suggests clinical disorders or settings where the test may be helpful
The evaluation and management of patients with kidney disease
Following the progression of known renal disease and/or response to therapy
Determining the cause of dysfunction in the transplanted kidney (allograft)
Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
The Mayo renal pathologist will perform the appropriate procedures and stains based on the patient information and specific findings on the case. Optimal interpretation of a kidney biopsy requires integration of the 8331 Renal Biopsy, Light Microscopy; 8104 Renal Biopsy, Immunohistology; and 4986 Renal Biopsy, Electron Microscopy findings, together with the clinical and laboratory data for the patient.
Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test
Method Name A short description of the method used to perform the test
Pathology Consultation
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Aliases Lists additional common names for a test, as an aid in searching
Kidney Biopsy
Kidney Transplant Biopsy
Renal Allograft Biopsy
Renal Biopsy
Renal Transplant Biopsy
RBPC
Specimen Type Describes the specimen type needed for testing
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.
Sources: Kidney
Container/Tube: Renal Biopsy Kit (Supply T231)
Specimen Volume: Entire specimen
Collection Instructions: Collect specimens according to the instructions in Renal Biopsy-Procedures of Handling Tissue for Light Microscopy, Immunohistology, and Electron Microscopy in Special Instructions.
Forms: Renal Biopsy Patient Information Sheet in Special Instructions
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 Type | Temperature | Time |
|---|---|---|
| Tissue | Refrigerated (preferred) | |
| Ambient | ||
Clinical Information Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test
The Mayo Renal Pathology service is staffed by board certified pathologists who have a special interest in non-neoplastic diseases of the kidney.
Kidney biopsy has proven to be of value in the clinical evaluation and management of patients with kidney disease, including acute and/or chronic renal insufficiency, nephrotic syndrome, nephritic syndrome, proteinuria and/or hematuria, and in the overall management of renal transplant recipients.
Optimal interpretation of a kidney biopsy requires integration of clinical and laboratory results with light microscopic, immunofluorescent histology, and electron microscopy findings.
Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
An interpretive report will be provided.
Interpretation Provides information to assist in interpretation of the test results
A verbal report of the findings is typically communicated by phone to the submitting Nephrologist, and an initial report based on the light microscopic and immunofluorescent histology interpretation is also faxed to the Nephrologist. A report is also sent to the submitting Pathology Laboratory.
Representative electron microscopy images and significant positive immunofluorescent stain findings can be provided on a CD upon request.
In most cases, the electron microscopy results are reported as an addendum and a final report is issued include these findings. This final report is again faxed to the submitting Nephrologist and mailed to the submitting Pathology Laboratory, along with a representative set of the light microscopy slides.
Cautions Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances
Accurate and timely interpretation of a kidney biopsy requires integration of light microscopic, immunofluorescent histology, and electron microscopic findings with clinical and laboratory data. Failure to provide the relevant clinical history and laboratory results may result in a delay in the interpretation or the inability to adequately correlate the biopsy findings with the clinical picture.
Method Description Describes how the test is performed and provides a method-specific reference
This request will be processed as a consultation and an interpretation will be provided in the context of the final pathology report.
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Friday
Weekend/holiday interpretation is available for clinically emergent cases (eg, acute renal failure, rapidly progressive glomerulonephritis, acute allograft dysfunction) but requires advanced notification and approval by a Mayo renal pathologist.
Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
Performing Laboratory Location The location of the laboratory that performs the test
CPT Code Information Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.
88325
LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the result codes returned for this test or profile.
| Result ID | Reporting Name | LOINC Code |
|---|---|---|
| 19311 | Accession Number | N/A |
| 19312 | Referring Pathologist/Physician | 46608-6 |
| 19313 | Ref Path/Phys Address | In Process |
| 19314 | Place of Death: | 21987-3 |
| 19315 | Date and Time of Death: | 31211-6 |
| 19316 | Date of Autopsy: | In Process |
| 19317 | Specimen: | 31208-2 |
| 19318 | Material: | In Process |
| 19319 | Tissue Description: | 22634-0 |
| 19320 | Microscopic Description: | In Process |
| 19321 | Clinical History: | In Process |
| 19322 | Final Diagnosis: | 34574-4 |
| 19323 | Final Diagnosis: | 34574-4 |
| 19324 | Comment: | 48767-8 |
| 19325 | Revision Description: | In Process |
| 19326 | Signing Pathologist: | In Process |
| 19327 | Special Procedures: | N/A |
| 19328 | SP Signing Pathologist: | N/A |
| 19329 | *Previous Report Follows* | N/A |
| 19330 | Addendum: | 35265-8 |
| 19331 | Addendum Comment: | 22638-1 |
| 19332 | Addendum Pathologist: | 19139-5 |
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