![Liquid chromatography–isotope dilution tandem mass spectrometry method for the measurement of urea in human serum and assignment of reference values to external quality assessment samples]()
Liquid chromatography–isotope dilution tandem mass spectrometry method for the measurement of urea in human serum and assignment of reference values to external quality assessment samplesYong, Sharon; Liu, Hong; Wong, Lingkai; Teo, Hui Ling; Chen, Yizhao; Liu, Qinde; Teo, Tang Lin; Lee, Tong Kooi · International Journal of Mass Spectrometry · 2017