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HelpTest Code LAB2045 Prostate Specific Antigen, Free
Includes:
Total PSA, Free PSA and % Free PSA
Collection:
Specimen: Blood
Container: Serum Separator (preferred) or Plain Red
Volume: 5 mL; Minimum 2 mL
Pediatric Collection:
Two Gold or Red microtainers filled to 600 uL.
Stability:
Once serum is separated from cells:
Ambient: 8 Hours
Refrigerated (preferred): 3 Days
Frozen: 2 Weeks
Turn Around Time (TAT):
STAT: 2 HOURS
Routine: 4 HOURS
Test Availability:
24 hours a day / 7 days a week
Performing Laboratory Section:
Chemistry / UMC MAIN LABORATORY
Reference Interval:
Total PSA: < 4.00 ng/mL
Free PSA: < 2.500 ng/mL
|
Probability of Prostate Cancer by Disease Prevalence for Subjects with ARCHITECT Total PSA levels between 4 and10 ng/mL and DRE Non-suspicious for Cancer |
|||||
|---|---|---|---|---|---|
| % Free PSA Ranges | |||||
|
Disease Prevalence Rate (%) |
<10 |
>10-15 | >15-20 | >20-26 | >26 |
| 25 | 44.0 | 32.9 | 23.4 | 16.0 | 10.6 |
| 29 | 48.6 | 37.1 | 26.9 | 18.6 | 12.5 |
| 36 | 56.0 | 44.2 | 33.1 | 23.5 | 16.1 |
Note The estimates of cancer probability may be influenced by the presence of other risk factors.
Interpretive Data:
The Abbott Alinity I Immunoassay System (Chemiluminescense Technology) is used to perform this assay. Reference range is adapted from Abbott method literature. Results obtained by other manufacturers’ assays may be different and should not be interpreted interchangeably.
Additional Test Codes
Free PSA %