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[Blue light source in phototherapy]

OBJECTIVE: To explore the efficacy of blue light-emitting diodes(LEDs) as a novel light source for phototherapy. METHODS: Equimolar bilirubin standard albumin solutions were irradiated with two light sources; LEDs and single side conventional blue light( sCBL). Light intensity was measured with a light meter. The emission intensity of LEDs was the same as sCBL. To estimate the effects of the two light sources, the change in bilirubin isomer before and during phtotherapy was determined using high-performance liquid chromatography. RESULTS: The effects of different light sources on equimolar bilirubin standard albumin solutions, the lumirubin (LR) and 4Z, 15E-Bilirubin IX alpha(ZE) formation of LEDs was the same as sCBL(P>0.05). CONCLUSION: LEDs is equally effective as single sCBL for phototherapy in vitro.