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HelpTest Code PSAS Prostatic Specific Antigen, Screen
Specimen Type
Blood
Preferred Collection Container
SST
Collection Instructions
Routine venipuncture
Collection Volume
5 mL
Minimum Collection Volume
1 mL
Testing Volume
0.5 mL (500 ul)
Rejection Criteria
Specimens other than serum.
Specimen Storage and Stability
Separate from cells and refrigerate, 7 days
Day(s) and Time(s) Performed
Monday through Sunday, 24 hours
Alias
PSA; Prostate Specific Antigen, Serum;
Ordering Info
This test is used for diagnosis codes associated with annual screening for men over the age of 50.
EPIC Code
LAB1076
Methodology
Immunoenzymatic Assay
Acceptable Collection Container
SST, R-NoGel
Patient Preparation
Specimens for PSA testing should be drawn prior to such prostatic manipulations as digital rectal exam (DRE), prostatic massage, transrectal ultrasound (TRUS), and prostatic biopsy. DRE may cause a transient increase in serum PSA levels. A repeat PSA measurement in the case of borderline elevation has been recommended. Transrectal needle biopsy has also been shown to cause persisting PSA elevations. Thus, a 6-week waiting period between needle biopsy and PSA sampling has been recommended.
Additional Information
INTERFERING SUBSTANCES: Anticoagulants
Turn Around Time
2 Days
Lab Department
Chemistry