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Table 2 sFlt-1 testing characteristics

From: Levels of soluble fms-like tyrosine kinase one in first trimester and outcomes of pregnancy: a systematic review

Reference Storage Temperature Dilution Duplicate Testing Intraassay Coefficient Interassay Coefficient Sensitivity
Akolekar, 2010 -80°C   yes    15 pg/mL
Baumann, 2008 -30°C 1:3   3.8% 7.0%  
Chaiworapongsa, 2005 -70°C    6.9% 4.8% 17.8 pg/mL
Erez, 2008 -70°C    3.9% 1.4% 17.0 pg/mL
Eskild, 2008 -20°C 1:5     17 pg/mL
Lynch, 2010 -80°C   yes   9.9%  
Noori, 2010 -70°C   yes    3.5 pg/mL
Rana S 2007 -80°C   yes 3.5% 8.1%  
Smith, 2007     10.4% 14.9% 5 pg/mL
Thadhani, 2004 -80°C   yes 3.5% 8.1%  
Vatten, 2007 -20°C 1:5     17 pg/mL
Wathen, 2006 -80°C   yes 5.0% 8.2% 5 ng/L
  1. All blood testing done using ELISA testing kits developed by R&D Systems.