Care at NUH

Neurodiagnostic Lab (NDL)

Neurodiagnostic Lab Services

The NDL provides essential tests aiding doctors in diagnosing and quantifying neurological disorders. The lab offers a comprehensive range of investigations that evaluate the functional aspects of the peripheral and central nervous system. 

For contact details, operating hours and directions to the NDL, please click  here.


I.   Tests for nerve, muscle and spine disorders 

These tests are crucial in evaluating various neurological disorders affecting the peripheral and central nervous system, neuromuscular junction and muscles 

  1. Nerve Conduction Studies 

  1. Electromyography (EMG) 

  1. Repetitive Nerve Stimulation 

  1. Single-fibre EMG 

  1. Peripheral nerve and muscle ultrasound 

  1. Blink reflex and facial nerve conduction studies 

  1. Somatosensory evoked studies (Median and Tibial) 

  1. Brainstem evoked potentials 

  1. Motor evoked potential - Transcranial magnetic stimulation 

II.  Tests for epilepsy disorders 

  1. Routine 30-minute electroencephalogram (EEG) recording 

  1. Prolonged EEG recording 

  1. Continuous EEG monitoring 

III. Tests for visual pathway assessment 

  1. Visual evoked potentials 

IV. Tests for stroke disorders 

  1. Extracranial Doppler studies of the carotids 

  1. Transcranial Doppler 

  1. Vasomotor reactivity of intracranial vessels 

  1. Right-to-left stunt study by Transcranial Doppler 

V. Tests for autonomic nervous system disorders and small fibre peripheral nerve disorders 

These tests evaluate the autonomic nervous system and small nerve fibres in patients presenting with autonomic symptoms (e.g., postural dizziness, palpitations, dry eyes/mouth) or small fibre sensory symptoms (e.g., extreme skin sensitivity, burning feet sensation). 

  1. Tilt Table Test with Heart Rate Variability 

  1. Quantitative Sweat Test 

  1. Thermal Sensory Test 

  1. Stimulated Skin Wrinkling 

  1. Skin Biopsy for Intra-Epidermal Nerve Fibre Density 

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