<prompt> The primary form of coisol in the plasma is that which isBound to albuminBound to transthyretinFree in solutionBound to coicosteroid-binding globulin CBG  <response>: The majority of coisol is bound to a specific carrier protein, coicosteroid binding globulin CBG, while smaller amounts are bound nonspecifically to albumin. Few, if any, coisol receptors would be expected in the plasma and transthyretin binds primarily thyroxine. 