PMID- 19615517 OWN - NLM STAT- MEDLINE DCOM- 20090925 LR - 20220321 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 79 IP - 4 DP - 2009 Sep 15 TI - Simple sequential injection analysis system for rapid determination of microalbuminuria. PG - 1104-10 LID - 10.1016/j.talanta.2009.02.020 [doi] AB - A simple, specific and sensitive sequential injection analysis (SIA) system based on non-immunoassay fluorescent detection has been developed for the determination of urinary albumin. The specific binding of the dye Albumin Blue 580 (AB 580) to albumin in urine generated high emission fluorescent signals. The excitation and emission wavelengths were set at 590 and 610 nm, respectively. The analytical range was obtained from 1 to 100 mg L(-1), with a detection limit of 0.3 mg L(-1) (S/N=3). The SIA system gave high precision with relative standard deviations (R.S.D.s) of 0.9% and 1.4% when evaluated with 15 and 100 mg L(-1) albumin (n=15), respectively. The method exhibited good reproducibility, as assessed by performing four analytical curves on different days, and intra-run CVs (2.3-3.3%) and inter-run CVs (3.8%) were obtained. Rapid operation was achieved with a sample throughput of 37 h(-1). This method was successfully applied to the determination of urinary albumin, and the method was highly correlated with the immunoturbidimetric method (r(2)=0.965; n=72). FAU - Laiwattanapaisal, Wanida AU - Laiwattanapaisal W AD - Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand. wanida.k@chula.ac.th FAU - Kunanuvat, Usakorn AU - Kunanuvat U FAU - Intharachuti, Wichabhorn AU - Intharachuti W FAU - Chinvongamorn, Chakorn AU - Chinvongamorn C FAU - Hannongbua, Supot AU - Hannongbua S FAU - Chailapakul, Orawon AU - Chailapakul O LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090220 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R RN - 0 (Albumin Blue 580) RN - 0 (Albumins) RN - 0 (Buffers) RN - 0 (Fluorescent Dyes) RN - 0 (Nitriles) SB - IM MH - Albumins/chemistry MH - Albuminuria/diagnosis/*urine MH - Buffers MH - Flow Injection Analysis/*methods MH - Fluorescence MH - Fluorescent Dyes/chemistry MH - Humans MH - Nitriles/chemistry MH - Reproducibility of Results MH - Time Factors MH - Urinalysis/*methods EDAT- 2009/07/21 09:00 MHDA- 2009/09/26 06:00 CRDT- 2009/07/21 09:00 PHST- 2008/11/18 00:00 [received] PHST- 2009/02/04 00:00 [revised] PHST- 2009/02/07 00:00 [accepted] PHST- 2009/07/21 09:00 [entrez] PHST- 2009/07/21 09:00 [pubmed] PHST- 2009/09/26 06:00 [medline] AID - S0039-9140(09)00145-3 [pii] AID - 10.1016/j.talanta.2009.02.020 [doi] PST - ppublish SO - Talanta. 2009 Sep 15;79(4):1104-10. doi: 10.1016/j.talanta.2009.02.020. Epub 2009 Feb 20.