Caffeine (Biotin)

May be stored at 4 degree C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degree C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Recognizes Caffeine. Crossreactivity: Caffeine: 100%; Xanthine: <0.05% Theophylline: 11.4%; Uric Acid: <0.05% Theobromine: 2.1%; 1-Methyluric Acid: <0.05% 3-Methylxanthine: 0.4%; 8-Methylxanthine: <0.05% 1, 7-Dimethylxanthine: 0.3%; 7-Methylxanthine: <0.05% 8-Chlorotheophylline: 0.3%; 1-Methylxanthine: <0.05%