677.3  Effect of nonaccepted offer.
  On the trial thereof the offer shall not be treated as an admission of the cause of action or amount to which the plaintiff was entitled, nor be given in evidence.
[R60, §3403; C73, §2898; C97, §3817; C24, 27, 31, 35, 39, §12674; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §677.3]