Non-Invasive Estimation of Serum Bilirubin • 1025

Noninvasive estimation of serum bilirubin.

OBJECTIVE The aim of this study was to evaluate the accuracy and clinical usefulness of a new computer-driven, hand-held device (Chromatics Colormate III) to estimate serum bilirubin from skin-reflectance (skin color) of neonates. STUDY DESIGN A total of 2441 infants (both term and premature) at two hospitals had repeated measurements of transcutaneous bilirubin. Of these infants, 900 had one...

The estimation of serum bilirubin.

Estimation of bilirubin in serum.

Most methods of estimating the concentration of bilirubin in serum are based on the van den Bergh reaction in which bilirubin couples with diazotized sulphanilic acid to give red " azobilirubin," the reaction being facilitated by the addition of an activator or catalyst such as ethanol. The many modifications of this reaction can be classified into two groups: (a) those in which ethanol is used...

Estimation of bilirubin binding capacity of neonatal serum.

One aim of laboratory investigation in neonatal jaundice is to prevent kernicterus from occurring. Estimation of the bilirubin-binding capacity of serum is an important measurement along with total bilirubin determination. With a convenient Sephadex competitive binding procedure, KERNLUTE provides information on whether or not the neonate's bilirubin-binding capacity has been exceeded. Further ...

Quantitative liquid-chromatographic estimation of bilirubin species in pathological serum.

Earlier we described a "high-performance" liquid-chromatographic procedure for separating the four distinct fractions of bilirubin (unconjugated, monoconjugated, diconjugated, and protein-bound) in pathological human serum (J. Chromatogr. 226: 391-402, 1981). We have modified the prechromatography precipitation of the serum globulins required in that method and have measured the bilirubin conte...