Use this panel when Free PSA is requested. Analysis will include Total PSA, Free PSA, and calculated % Free PSA.
Synonyms
TFP
Prostate Specific Antigen
Prostate Specific Antigen Free and Total
Test Components
PSA Total
PSA Free
PSA % Free
Specimen Type
Blood (Plasma)
Blood (Serum)
Collect
Preferred:
Light Green (Lithium Heparin, Li Hep, PST, 3.0 mL)
Alternate:
Gold (Serum Separator, SST, Gold SS)
Red (Non-additive, RED, 4.0 mL)
Specimen Type
Blood (Plasma)
Blood (Serum)
Specimen Preparation
Centrifuge specimen to separate plasma or serum from cells.
If collected in Red (Non-additive, RED, 4.0 mL):
Centrifuge to separate serum from cells.
Transfer serum to an aliquot tube.
Add Serum to the label.
Test, Preferred Volume
1.0 mL (Plasma or Serum)
Test, Minimum Volume
0.6 mL (Plasma or Serum)
Storage/Transport Temperature
Refrigerated (2-8°C)
Stability (from collection to initiation)
Ambient: 8 hours
Refrigerated: 5 days
Frozen: 3 months
Performed
Daily
Reported
24 hours
Methodology
Chemiluminescent Immunoassay
Performing Lab
AWL
Department
Core
Reference Interval
PSA % Free: ≥ 26 ng/mL
PSA Total:
Age (years)
ng/mL
49 or less
≤ 2.5
50-59
≤ 3.5
60-69
≤ 4.5
70 or greater
≤ 6.5
Interpretive Data
PSA Total and PSA Free:
This test was performed using Roche instrumentation. Tumor marker results from different assays should not be compared or trended.
EAP
202757
Test Last Updated
01/30/2025
Ordering
EAP
202757
Ordering Recommendations
Use this panel when Free PSA is requested. Analysis will include Total PSA, Free PSA, and calculated % Free PSA.
Synonyms
TFP
Prostate Specific Antigen
Prostate Specific Antigen Free and Total
Test Components
PSA Total
PSA Free
PSA % Free
Collection
Specimen Type
Blood (Plasma)
Blood (Serum)
Collect
Preferred:
Light Green (Lithium Heparin, Li Hep, PST, 3.0 mL)
Alternate:
Gold (Serum Separator, SST, Gold SS)
Red (Non-additive, RED, 4.0 mL)
Specimen Processing
Specimen Type
Blood (Plasma)
Blood (Serum)
Specimen Preparation
Centrifuge specimen to separate plasma or serum from cells.
If collected in Red (Non-additive, RED, 4.0 mL):
Centrifuge to separate serum from cells.
Transfer serum to an aliquot tube.
Add Serum to the label.
Test, Preferred Volume
1.0 mL (Plasma or Serum)
Test, Minimum Volume
0.6 mL (Plasma or Serum)
Storage/Transport Temperature
Refrigerated (2-8°C)
Stability (from collection to initiation)
Ambient: 8 hours
Refrigerated: 5 days
Frozen: 3 months
Testing
Performed
Daily
Reported
24 hours
Methodology
Chemiluminescent Immunoassay
Performing Lab
AWL
Department
Core
Result Interpretation
Reference Interval
PSA % Free: ≥ 26 ng/mL
PSA Total:
Age (years)
ng/mL
49 or less
≤ 2.5
50-59
≤ 3.5
60-69
≤ 4.5
70 or greater
≤ 6.5
Interpretive Data
PSA Total and PSA Free:
This test was performed using Roche instrumentation. Tumor marker results from different assays should not be compared or trended.
