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Geisinger Medical Laboratories Test Catalog
PSA PROFILE |
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Geisinger Epic Procedure Code: LAB2945
Geisinger Epic ID: 19116
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SPECIMEN COLLECTION |
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Specimen type: |
Plasma or serum | |
Preferred collection container: |
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Specimen required: |
2 mL of serum or plasma; minimum 0.5 mL. | |
| SPECIMEN PROCESSING |
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Specimen processing instructions: |
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection. | |
Transport temperature: |
Refrigerated (preferred) or frozen. | |
Specimen stability: |
Refrigerated: 5 days. Frozen: 3 months. | |
Rejection criteria: |
Stability limits exceeded. | |
TEST DETAILS |
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Reference interval: |
Total PSA: 60 years and above: <4.1 ng/mL 50-60 years: <3.1 ng/mL 40-50 years: <2.0 ng/mL 0-40 years: <1.4 ng/mL Free PSA/Total PSA index: >25% |
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Additional information: |
Specimens containing human anti-mouse antibodies may affect results. | |
CPT code(s): |
84154, 84153 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Test includes: |
Total PSA, with an add-on of Free PSA if total PSA is abnormally high | |
Methodology: |
Roche Electrochemiluminescence Immunoassay. Patient results determined by assays using different manufacturers or methods may not be comparable. |
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Synonyms: |
PSAB, FREE PSA PERCENT
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Clinical significance: |
In patients where total PSA is high, those with prostate cancer tend to have a lower percent of free PSA than those with benign prostatic hypertrophy (BPH). Therefore, the percent free PSA may aid in determining the likelihood of prostate cancer. | |
Doctoral Director(s:) |
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM Sheng-Ying (Margaret) Lo, PhD, DABCC |
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| Review Date: | 02/13/2024 | |