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Table 1 Preanalytical variables included in the Standard PREanalytical Code (SPREC), applied to urine samples

From: Isolation and characterization of urine microvesicles from prostate cancer patients: different approaches, different visions

Sample ID

Type of sample

SPREC codea

127

PCa patient

URN-PIX-D-D-N-N-J

129

PCa patient

URN-PIX-D-D-N-N-J

132

PCa patient

URN-PIX-A-D-N-N-J

144

PCa patient

URN-PIX-B-D-N-N-J

146

PCa patient

URN-PIX-B-D-N-N-J

148

PCa patient

URN-PIX-B-D-N-N-J

161

HDs

URN-PIX-A-D-N-N-J

163

HDs

URN-PIX-A-D-N-N-J

164

HDs

URN-PIX-A-D-N-N-J

167

HDs

URN-PIX-A-D-N-N-J

  1. aEach biospecimen is assigned a seven-element-long code that corresponds to seven preanalytical variables. First code element: type of sample (URN: urine). Second code element: type of primary container (PIX: with Protease inhibitors). Third code element: precentrifugation (A: RT < 2 h, B: 3–7 °C < 2 h, D: 3–7 °C 2–4 h). Fourth code element: centrifugation (D: 3–7 °C 10 min < 3000 g with braking). Fifth code element: second centrifugation (N: No centrifugation). Sixth code element: postcentrifugation (N: Not applicable). Seventh code element: storage condition [J: PP (Poly propylene) tube ≥ 5 mL (− 85) to (− 60) °C. If the preanalytical option used is unknown or inconstant, the letter “X” is used. If the preanalytical option used is known but does not correspond to any of the standard options, the letter “Z” is used. (RT: room temperature 18–25 °C) [25]