- Normal levels of anticoagulant heparan sulfate are not essential for normal hemostasis. HajMohammadi, S., Enjyoji, K., Princivalle, M., Christi, P., Lech, M., Beeler, D., Rayburn, H., Schwartz, J.J., Barzegar, S., de Agostini, A.I., Post, M.J., Rosenberg, R.D., Shworak, N.W. J. Clin. Invest. (2003)