Some authors do not use the serum PSA directly, but rather perform a sigmoid transformation on the value.
Parameters:
(1) serum PSA in ng/mL
X =
= (-0.9815 * (PSA)) + 6.8704
sigmoid transformation of the serum PSA =
= 10 / (1 + EXP(X))
where:
• The transformed value is probably best considered dimensionless.
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Specialty: Urology, Clinical Laboratory
ICD-10: ,
