The osmolarity of urine in these subjects was 958 milliosmoles/L, compared with an average blood osmolarity of 284 milliosmoles/L. The higher osmolarity of urine suggests that:

The correct answer is -higher than normal osmolarity of urine may indicate conditions such as Addison disease, congestive heart failure or shock.

Explanation:

The osmolarity of urine stimulates the body to produce ADH hormone that informs the kidney to prevent water in the blood vessels and urine become concentrated.

The osmolarity tells the concentration of the particles in urine, in the high concentration of higher osmolarity may indicate conditions such as Addison disease, congestive heart failure or shock.