Laboratory Services
Afirma Genomic Sequencing Classifier (GSC)
Print this pageUpdated Test Information:
Test Description |
Afirma Genomic Sequencing Classifier (GSC)
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Synonym(s) |
Veracyte, Afirma, Genomic Sequencing Classifier, GSC, Thyroid FNA Molecular Testing |
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Specimen Type |
2 complete passes from a thyroid fine needle aspirate (FNA) |
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Specimen Requirements |
2 complete passes from a thyroid fine needle aspirate (FNA) expressed into an Afirma FNAprotect tube after the FNA collection for cytology. |
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Specimen Collection / Processing Instructions |
Collect 3 passes and express them into a green top cytology fixative vial and prepare and label accompanying slides. Then collect 2 additional passes and express them into the Afirma FNAprotect collection tube. |
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Required Information |
Complete the Incyte Diagnostics requisition with the patient's demographics and relevant clinical history. Label specimen container with the patient's full first and last name, second unique identifier, and specimen source/site. Provide the site and size of the target lesion. |
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Stability |
The Afirma FNAprotect tube specimen is stable at room temperature for up to 72 hours and then frozen at -20 to -80° C for 30 days. |
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Unacceptable Specimen Conditions |
Unlabeled specimen, specimen in incorrect medium, expired FNAprotect tube, specimen that has not been frozen at -20 to -80° C within 72 hours. |
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Department (code) |
Referral |
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Methodology |
Gene expression classification |
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Estimated TAT |
Approximately 14 days |
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Testing Schedule |
Monday–Friday |
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Retention |
Specimens are retained frozen for 30 days after completion of FNA testing. |
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Collection File | View/Download File |