Commencing from 1 July 2024, patients attending an overnight sleep study are to arrive at 7:15 - 7:30 pm.


Welcome to THE Lab

Total Health Evaluation Lab Pty Ltd (aka THE Lab) is a local specialist medical practice providing a professional Respiratory & Sleep Medicine service in Orange, Central West NSW.

Our mission is to provide the same Respiratory and Sleep Medical Services to the Central West as seen in major cities, operating out of our purpose-built facility. We are located in the Bloomfield Medical Centre on Level 3, 1521 Forest Road, Orange.

Specialists, A/Prof Budhima (Bud) Nanayakkara and Dr Karanvir Singh work with a team of skilled Sleep and Respiratory scientists and nurses, and administration staff to provide a premium service to the local community.

Our service is different from the rest – we do not just treat snoring, but all sleep disorders. This includes the diagnoses and management of narcolepsy, insomnia, movement disorders, circadian rhythm disorders and sleep-breathing issues. We also offer 'fitness to drive' and 'fitness to work' assessments.

Our service also offers Cognitive Behaviour Therapy for insomnia, other behavioural sleep disorders and CPAP adherence.

We also perform a range of lung function testing to help diagnose and manage a range of conditions including asthma, COPD, lung cancer and other airway diseases.

At Home & In-Patient Sleep Study Evaluation

We provide diagnostic and therapeutic sleep studies. We abide by guidelines provided by the Australasian Sleep Association and American Academy of Sleep Medicine.

Our procedures are all non-invasive.

Our service offers in-lab and home sleep study testing. These tests include EEG recording, audio and video, oximetry and carbon dioxide monitoring. This enables us to assess sleep-breathing disorders (including sleep apnea and hypoventilation), parasomnias, movement disorders, excessive sleepiness and insomnia.

We also perform daytime sleep studies to objectively assess daytime sleepiness and fitness to drive.

Our therapeutic service offers in-lab CPAP titration sleep studies, as well as sleep studies to examine how effective therapy (e.g. weight loss, mandibular advancement splints and positional therapy) has on breathing disorders.



Get In Touch!

Phone: 02 5350 4690
Fax: 02 6311 1561



Level 3, 1521 Forest Road
Orange NSW 2800