The customer observed falsely depressed results while using architect total psa (prostate specific antigen) reagents.The following data was provided for the same patient.Sid (b)(6) initial 0.83 ng/ml, repeat 0.80, 0.79, 0.74 ng/ml, repeat in another laboratory 0.71, 0.61, 0.83, 0.88 ng/ml.Sid (b)(6) initial 1.19 ng/ml, not repeated.Sid (b)(6) initial 2.02 ng/ml, not repeated.Sid (b)(6) initial 1.16 ng/ml, not repeated.Sid (b)(6) initial 3.38 ng/ml, not repeated.Sid (b)(6) initial 1.09 ng/ml, not repeated.Sid (b)(6) initial 4.57 ng/ml, not repeated.Sid (b)(6) initial 7.23 ng/ml, not repeated.Sid (b)(6) initial 0.74 ng/ml, not repeated.No impact to patient management was reported.
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