Neb. Rev. Stat. §§ 60-6,199
The peace officer who requires a chemical blood, breath, or urine test or tests pursuant to section 60-6,197 may direct whether the test or tests shall be of blood, breath, or urine. The person tested shall be permitted to have a physician of his or her choice evaluate his or her condition and perform or have performed whatever laboratory tests he or she deems appropriate in addition to and following the test or tests administered at the direction of the officer. If the officer refuses to permit such additional test to be taken, then the original test or tests shall not be competent as evidence. Upon the request of the person tested, the results of the test or tests taken at the direction of the officer shall be made available to him or her.
Neb. Rev. Stat. §§ 60-6,199