Prostate Specific Antigen, Diagnostic

Test Name

Prostate Specific Antigen, Diagnostic

Alternate Description

PSA Diagnostic

LIS Code

TPSA

Availability

24 hours X 7 days

Lab Section

Chemistry

Fluid Type

Serum, Plasma

Specimen Tube Type Transport

Gel or Non Gel Red Top or Lithium Heparin Green Top Tube

Container Whole Blood Required

6 mL whole blood in a Non Gel or Gel Red Top or Green Top

Summary Test Name

Prostate Specific Antigen, Diagnostic

Specimen Preparation Outreach

Red top (serum):  Spin after clot formation.  Separate serum into 13x75 pour off tube and cap.  Refrigerate until courier pickup.Green top (Li Heparin plasma):  Spin and refrigerate until courier pickup. 

Specimen Stability

Serum, Plasma stable 5 days at 2 - 8ºC

Minimum Volume

1 mL Serum or Plasma

Specimen Transport

Refrigerate

Specimen Preparation In House

Spin/separate and refrigerate until analysis

Reference Value

 

The distribution of tPSA results was measured in a cohort of 395 normal healthy males aged  50-94 years (results of a study in the USA). The subsequent table presents the tPSA values as measured on the Elecsys 2010 immunoassay analyzer.

 

Age (years) Total PSA ng/mL
< 40 <2.01
40 - 49 <2.51
50 - 59 <3.51
60 - 69 <4.51
70 - 79 <6.51
> 70 <7.21

 

The above normal range was verified by a normal range study performed at Hershey Medical Center in 2017.