Category
SPECIAL CHEMISTRY.
Sub Category
TUMOR MARKER.
Synonyms/Aliases
PSA, TOTAL.
Abbreviations
PSA.
Type
INDIVIDUAL TEST
3 HOURS.
RESULTS READY/ REPORTED IN3 HOURS.
Method
IMMUNOASSAY.
Temp
AMBIENT (25℃): 2HOURS; R (2℃-8℃): 3DAYS; F (-20℃):30DAYS.
Setup
DAILY.
Components Parameters
NOT APPLICABLE.
PRE-ANALYTIC CONSIDERATIONS
Test Ordering Instructions
FILL OUT TEST REQUEST FORM FULLY & LEGIBLY.
Patient preparation
N/A
Sample type
SERUM.
Container/ preservative
SERUM SEPARATOR TUBE (SST/ GEL) OR PLAIN (RED TOP) VACUTAINER.
Sample volume
AT LEAST 2ML.
Rejection criteria
LABELING ISSUE (UNLABELED/ MISLABELED); MISSING REQUEST FORM; MISMATCH BETWEEN REQUEST FORM & SAMPLE DETAILS; MISSING AGE/ GENDER; WRONG SAMPLE TYPE; INSUFFICIENT SAMPLE.
Other Instructions
CENTRIFUGE SST (SERUM GEL TUBES) WITHIN 1-2 HOURS OF COLLECTION. CENTRIFUGE RED TOP VACUTAINERS AND ALIQUOT SERUM WITHIN 1-2 HOURS OF COLLECTION. THE SEPARATION VIAL MUST BE LABELED WITH AT LEAST 2 PATIENT IDENTIFIERS AND THE SAMPLE TYPE.
Reference intervals
CONVENTIONAL CUTOFF <4NG/ML.
Clinical Utility
SCREENING AND DIAGNOSIS OF PROSTATE CANCER.
Test Limitations/ Confounders
IMMUNOASSAY INTERFERENCE CAN GIVE RISE TO SPURIOUS RESULTS. SUCH INTERFERENCE CAN ARISE FROM PRESENCE OF HETEROPHILE ANTIBODIES, ANTI-ANIMAL ANTIBODIES, AUTOANTIBODIES, PARAPROTEINS, BIOTIN ETC. RESULTS SHOULD ALWAYS BE CORRELATED WITH CLINICAL FINDINGS.