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Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog
PSA BATTERY |
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ORDERING INFORMATION: | ||
Sunquest Test Code: |
PSAB Geisinger Epic Procedure Code: PSAB Geisinger Epic ID: 19116 | |
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 serum or plasma at 1100-2000 g for a minimum of 10 minutes. | |
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: |
PSA, Total; PSA, Free; PSA, Free PSA Percent | |
Methodology: |
Electrochemiluminescence |
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Synonyms: |
FREE PSA PERCENT
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Clinical significance: |
In men over 50 years of age with total PSA between 4.0 and 10.0 ng/mL, those with prostate cancer tend to have a lower percent of free PSA than those with benign prostatic hypertrophy (BPH), although there is considerable overlap in results for the two populations. The percent free PSA may aid in avoiding unnecessary biopsies in these circumstances. | |
Doctoral Director(s:) |
Hoi-Ying Elsie Yu, PhD, DABCC Sheng-Ying (Margaret) Lo, PhD, DABCC |
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| Review Date: | 11/05/2018 | |