J. Clin. Lab. Anal. volume 28, issue 4, P315-319 2014 DOI: 10.1002/jcla.21687 View full text
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Tsukasa Igawa, Kosuke Takehara, Toru Onita, Kazuto Ito, Hideki Sakai

Abstract: Preanalytical stability was lower for [-2]pro-PSA than for free PSA or tPSA. Whole-blood [-2]pro-PSA increased in a time-dependent manner, particularly at RT. Thus, whole blood samples collected at RT should be centrifuged within 1 hr after drawing. The [-2]pro-PSA in serum is stable for at least 24 hr at both RT and at 4°C.