PSA Screen for Adults, 50 Years and Older


Abbrev Code:PSA50   
Order Code:LAB3696Order Name:Prostat Spec Antigen Screen
Methodology:Roche: Electrochemiluminescence immunoassay (ECLIA)
Vista: Chemiluminescence
CPT Codes: G0103 x1, B0103 x
Turnaround Time:Varies by site.
Associated Links:

Roche Go Live Schedule



Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Collection Instructions:Chemistry Tests Containers Chart
Contraindications:Large doses of biotin (10 mg or more per day) may cause clinically significant interference in PSA tumor marker levels. If interference is suspected, it is strongly recommended that biotin is discontinued for at least one week prior to retesting.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot within 4 hours of collection, 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature to arrive within 5 days.
Stability:Roche: 24 hours at room temperature; 5 days refrigerated; 6 months frozen.
Vista: 7 days refrigerated; 4 months frozen at -80°C.  
Test Performed at or Referral Lab Chemistry  (CSC Maple Grove, Roche-CSC Mpls, Roche-Grand Itasca, Roche-Lakes, Roche-Northland, Roche-Range, Roche-UMMC East)


Interpretive

Reference Range:Vista: 0-4 ug/L
Roche:
Age PSA
ng/mL
40-49 y 0-2.5
50-59 y 0-3.5
60-69 y 0-4.5
70-79 y 0-6.5
Results with different assay methods or kits cannot be used interchangeably.
Use:Elevated in many patients with prostate cancer, as well as in some patients with prostatic hypertrophy.


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