PSA Screen for Adults, 50 Years and Older


Abbrev Code:PSA50   
Order Code:LAB3696Order Name:Prostat Spec Antigen Screen
Methodology:Chemiluminescence
CPT Codes: G0103 x1
Turnaround Time:Varies by site.


Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel), St Johns/St Joseph/Woodwinds - Red (no gel)
Alternate Containers: Red (no gel), Red or gold (gel)
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. Alternatively, ship on dry ice.
Stability:Stability: Refrigerated - 7 days; frozen at -80C - up to 4 months.
Test Performed at or Referral Lab Chemistry  (CSC Maple Grove, Range, UMMC East, Oxboro Clinic, Lakes, Northland, CSC Mpls, Grand Itasca, St. Joseph's)


Interpretive

Reference Range:0-4 ug/L
Use:Elevated in many patients with prostate cancer, as well as in some patients with prostatic hypertrophy.


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