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HelpTest Code NF1Z Neurofibromatosis Type 1, NF1, Full Gene Analysis, Varies
Ordering Guidance
For a comprehensive hereditary cancer panel that includes the NF1 gene, consider ordering 1 of the following tests:
-BRGYP / Hereditary Breast/Gynecologic Cancer Panel, Varies
-ENDCP / Hereditary Endocrine Cancer Panel, Varies
-HPGLP / Hereditary Paraganglioma/Pheochromocytoma Panel, Varies
Testing for NF1 gene as part of a customized panel is available. For more information see CGPH / Custom Gene Panel, Hereditary, Next-Generation Sequencing, Varies.
Targeted testing for familial variants (also called site-specific or known mutations testing) is available for this gene. For more information see FMTT / Familial Variant, Targeted Testing, Varies. To obtain more information about this testing option, call 800-533-1710.
Shipping Instructions
Specimen preferred to arrive within 96 hours of collection.
Specimen Required
Patient Preparation: A previous bone marrow transplant from an allogenic donor will interfere with testing. Call 800-533-1710 for instructions for testing patients who have received a bone marrow transplant.
Specimen Type: Whole blood
Container/Tube:
Preferred: Lavender top (EDTA) or yellow top (ACD)
Acceptable: Any anticoagulant
Specimen Volume: 3 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Send whole blood specimen in original tube. Do not aliquot.
Specimen Stability Information: Ambient (preferred) 4 days/Refrigerated
Forms
1. New York Clients-Informed consent is required. Document on the request form or electronic order that a copy is on file. The following documents are available:
-Informed Consent for Genetic Testing (T576)
-Informed Consent for Genetic Testing (Spanish) (T826)
2. Molecular Genetics: Inherited Cancer Syndromes Patient Information Sheet (T519)
3. If not ordering electronically, complete, print, and send a Oncology Test Request (T729) with the specimen.
Useful For
Evaluating patients with a personal or family history suggestive of neurofibromatosis type 1 (NF1)
Establishing a diagnosis of a NF1 allowing for targeted cancer surveillance based on associated risks
Identifying genetic variants associated with increased risk for NF1 allowing for predictive testing of at-risk family members
Special Instructions
Method Name
Sequence Capture and Targeted Next-Generation Sequencing followed by Polymerase Chain Reaction (PCR) and Sanger Sequencing
Reporting Name
NF1 Full Gene AnalysisSpecimen Type
VariesSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Varies | ||
Reference Values
An interpretive report will be provided.
Interpretation
All detected variants are evaluated according to American College of Medical Genetics and Genomics recommendations.(5) Variants are classified based on known, predicted, or possible pathogenicity and reported with interpretive comments detailing their potential or known significance.
Clinical Reference
1. Friedman JM: Neurofibromatosis 1. In: Adam MP, Everman DB, Mirzaa GM, et al, eds. GeneReviews [Internet]. University of Washington, Seattle; 1998. Updated April 2, 2022. Accessed November 7, 2022. Available at: www.ncbi.nlm.nih.gov/books/NBK1109/
2. Daly MB, Pal T, Berry MP, et al: Genetic/Familial high-risk assessment: Breast, ovarian, and pancreatic, version 2.2021, NCCN Clinical Practice Guidelines in Oncology. J Natl Compr Canc Netw. 2021 Jan 6;19(1):77-102
3. Miller DT, Freedenberg D, Schorry E, Ullrich NJ, Viskochil D, Korf BR; COUNCIL ON GENETICS; AMERICAN COLLEGE OF MEDICAL GENETICS AND GENOMICS: Health supervision for children with neurofibromatosis type 1. Pediatrics. 2019 May;143(5):e20190660
4. Stewart DR, Korf BR, Nathanson KL, Stevenson DA, Yohay K: Care of adults with neurofibromatosis type 1: a clinical practice resource of the American College of Medical Genetics and Genomics (ACMG). Genet Med. 2018 Jul;20(7):671-682
5. Richards S, Aziz N, Bale S, et al: Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology. Genet Med. 2015 May;17(5):405-424
Day(s) Performed
Varies
Report Available
21 days to 28 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
81408
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| NF1Z | NF1 Full Gene Analysis | 101385-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 614767 | Test Description | 62364-5 |
| 614768 | Specimen | 31208-2 |
| 614769 | Source | 31208-2 |
| 614770 | Result Summary | 50397-9 |
| 614771 | Result | 82939-0 |
| 614772 | Interpretation | 69047-9 |
| 614773 | Resources | 99622-3 |
| 614774 | Additional Information | 48767-8 |
| 614775 | Method | 85069-3 |
| 614776 | Genes Analyzed | 48018-6 |
| 614777 | Disclaimer | 62364-5 |
| 614778 | Released By | 18771-6 |