Int J Anal Bio-Sci 　Print edition: ISSN 2187-7912 　Online edition: ISSN 2187-7920 　CODEN: IJABGQ 　 　　 　　 Copyright © 2014, International Journal of Analytical Bio-Science Online by the Society of Analytical Bio-Science.The person using Int J Anal Bio-Sci Online may view, reproduce, or store copies of articles comprising the journal provided that the articles are used only for their personal. Volume 2, Issue 1, 2014 National Institute of Standards and Technology SRM 972 as a reference material for serum total 25-hydroxyvitamin D measurements Hiroshi Ihara, Kouichi Hirota, Masakazu Miura, Isao Kitajima, Mine Yamashita, Fumio Nomura, Motoi Nishimura, Masayuki Totani, Naotaka Hashizume, Yoshikazu Aoki, Yoichi Nagamura, Kazuyuki Kamioka, Kimiko Onda, Satoshi Sunahara, Tomoko Suzuki, Mitsuharu Itabashi, Midori Ishibashi, Shozo Ito, Koji Ohashi, Yoshiji Ohta, Tsutomu Nobori, Kinya Fujishiro, Masato Maekawa, Hiroshi Miyano, Toshihiko Ando, Kazuko Nishimura, Naoko Tsugawa, and Toshio Okano, on behalf of the Committee on Nutrition of the Japan Society of Clinical Chemistry and the Japan Committee for Vitamin Laboratory Standards Int J Anal Bio-Sci, 31 March 2014, 2 (1): 1-6 Optimisation of ammonium sulfate precipitation method to achieve high throughput concentration of crude alkaline phosphatase from Brown shrimp (Metapenaeus monoceros) hepatopancreas Krishna Prasad Nooralabettu Int J Anal Bio-Sci, 31 March 2014, 2 (1) : 7-16 Changes in serum levels of retinol and ascorbic acid in response to amounts of vitamins taken from the diets in young Japanese women Hiroshi Ihara, Takashi Kakinoki, Asuka Tani, Mio Koyasu, Yuji Oikawa, Nobuaki Matsumoto, Yosikazu Morita, Yoshio Shino, Kiyoshi Takamiya, Makoto Suzuki, Naotaka Hashizume Int J Anal Bio-Sci, 31 March 2014, 2 (1) : 17-22 Development of the enzymatic assay for whole blood choline using an automated biochemical analyzer Akiyo Yumura, Eisaku Hokazono, Katsuyoshi Ikeda, Konen Obayashi, Yukio Ando, Susumu Osawa Int J Anal Bio-Sci, 31 March 2014, 2 (1) : 23-32 Reaction mechanism of human α-amylase: The role of chloride and histidine residues Zensuke Ogawa, Yumi Kitagawa, Hitoshi Ikeya, Hideaki Suzuki Int J Anal Bio-Sci, 31 March 2014, 2 (1) : 33-40 Google Schola