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Gene analysis (v-Ki-ras2 Kirsten rat sarcoma viral oncogene) variants in codons 12 and 13

Needle measurement of electrical activity in arm or leg muscles, limited study

Nerve conduction, 3-4 studies

Nerve conduction, 11-12 studies

Nerve conduction, 13 or more studies

Testing of autonomic nervous system function and heart rate response to deep breathing

Testing of autonomic (sympathetic) nervous system function

Measurement of nerve conduction using visual stimulation testing with report

Testing of nerve-muscle junction

Administration of developmental test, first hour