Dr Ng Tsun Gun


Dr Ng graduated from the National University of Singapore in 1998. He received his training in Internal Medicine at Tan Tock Seng Hospital, National University Hospital, Singapore General Hospital and Changi General Hospital. He attained Membership of the Royal College of Physicians of the United Kingdom in 2003. He subsequently underwent Advanced Specialist Training in Renal Medicine at Tan Tock Seng Hospital and obtained Specialist accreditation in Renal Medicine from the Ministry of Health & Singapore Medical Council in 2007.

He was awarded the Health Manpower Development Plan Fellowship where he spent a year at Princess Alexandra Hospital in Brisbane, Australia focusing on recent advances in Haemodialysis care including home haemodialysis and nocturnal haemodialysis. He was conferred Fellowship of the Royal College of Physicians of Edinburgh in 2009 and Fellowship of the Academy of Medicine, Singapore in 2010.

He is active in the promotion of Nephrology in Singapore and was in the Executive Committee of the Singapore Society of Nephrology from 2008 to 2016. He served as Honorary Secretary of the Singapore Society of Nephrology from 2009 to 2012.

He started his private practice at Gleneagles Medical Centre and Mount Elizabeth Novena Specialist Centre in 2012, specialising in the evaluation and treatment of various kidney disorders. He is currently also the medical director of multiple dialysis centres in Singapore.

Our Services

General Kidney Conditions

  • Blood in the urine
  • Protein in the urine
  • Infections of the kidneys or urinary tract
  • Kidney stones
  • Glomerulonephritis
  • Electrolytes/ Acid base disorders
  • Congenital or hereditary kidney diseases
  • Autoimmune conditions (including SLE) with kidney manifestations
  • Kidney problems in pregnancy
  • Kidney problems in ICU
  • Assessment and detection of early kidney abnormalities/problems


  • Diabetes with protein in the urine, kidney problems or kidney failure
  • Poorly controlled diabetes


  • Hypertension related kidney problems
  • Poorly controlled or difficult to control hypertension

Kidney Failure, Dialysis & Transplantation

  • Acute Kidney Failure
  • Chronic Kidney Disease including evaluation of the cause, slowing progression of the kidney disease and management of the complications of kidney disease
  • End Stage Kidney Failure including options for dialysis/transplantation and management of the complications of kidney failure
  • Acute dialysis in ICU
  • Chronic Haemodialysis (hospital, outpatient and home dialysis)
  • Chronic Peritoneal Dialysis
  • Assessment and management of kidney transplant recipients and donors

Preventive Medicine

  • Care of the kidneys and prevention of kidney disorders


  • Kidney biopsy (native and transplanted kidney)
  • Insertion of haemodialysis catheter

Kidney Health Tips

The kidneys are essential for healthy living and survival. Most people are born with two kidneys, each about the size of an adult fist. The kidneys are bean-shaped and weigh around 150 grams each. The kidneys are located at both sides of your backbone just under the rib cage. The kidneys perform the following essential functions:

  1. Regulation of water balance
  2. Regulation of electrolyte and acid-base balance
  3. Removal of waste products
  4. Production of hormones

Regulation of water balance

The kidneys are responsible for the regulation of water balance in the body. Excess fluid in the body is removed as urine. Drinking more water and fluids will result in the production of more urine while inadequate fluid intake will result in the production of more concentrated urine.

Regulation of electrolyte and acid-base balance

The kidneys also play an important role in maintaining the right environment for normal body functioning in terms of salt and acid content. The critical regulation of the body's salt, potassium, other electrolytes/minerals and acid content is performed by the kidneys. The kidneys have the ability to remove the right amount of salt and other electrolytes/minerals from the blood to leave just the quantities that the body requires.

Removal of waste products

Waste products in the blood come from the normal breakdown of active tissues such as muscles, and from food. Waste products are removed by the kidneys in the urine. High levels of waste products in the blood are harmful to our bodies.

Production of hormones

The kidneys are responsible for the production of 3 important hormones:

  1. Erythropoietin, which stimulates the bone marrow to produce red blood cells
  2. Activated Vitamin D, which is essential for healthy bones
  3. Renin, which plays a role in the regulation of blood pressure



  1. 身体水分的调节
  2. 排泄废物、药物及有毒物质
  3. 维持电解质的平衡
  4. 维持酸碱平衡
  5. 内分泌功能


  • 肾脏会将循环至肾脏的血液加以过滤后,一部分形成尿液,一部分再吸收回体内
  • 一天正常的尿液量约为一到二公升左右
  • 肾脏会视身体状况来排除或保留水分
  • 如天热、运动或劳动时出汗多,体内水分少了,尿量就减少; 冷天尿就多些
  • 饮水多了尿也多,不饮水尿就少些


  • 身体代谢后产生的废物如尿素,肌酸酐等会经血液循环至肾脏,再由肾脏将废物过滤并以尿液的形式将其排出体外,以达到排泄废物的功能
  • 肾脏能把这些废物排出体外,让它不在血液中过量累积,从而维持人体正常生理的运作
  • 不少药物也是由肾脏排泄的;一旦得了肾病,药物排出减少,用药量也必须相应减少,否则可能会发生药物中毒


  • 电解质是身体所需要的物质
  • 肾小球的滤液中含有血液中的各种电解质,当进入肾小管后,钠、钾、钙、磷、镁、碳酸氢等大部分被重吸收
  • 肾小管能按人体的需要来调节其重吸收量;排除过多或保留身体所需的电解质,以维持身体正常功能


  • 肾脏的功能也包括维持身体酸碱的平衡
  • 肾脏能把新陈代谢过程中的酸性物质通过尿液排出体外,并能控制酸性和碱性物质排出的比例
  • 当体内酸碱平衡失常时,人体的生理活动就会发生障碍,从而产生一些症状


  • 肾脏不只是排泄器官,它也是重要的内分泌器官, 当中就包括促进红细胞生成、活化维生素D及调节血压的功能

Many people suffering from kidney disease do not exhibit any symptoms or signs until the advanced stages of their disease. As a result, many people with kidney disease go undetected and therefore untreated.

Some symptoms and signs that may suggest kidney disease include:

  • Blood in the urine
  • Excessive foaming of the urine
  • Frequent need for urination during the night
  • Decrease in the volume of urine
  • Puffiness or swelling of the eyes, hand and/or feet
  • Shortness of breath
  • Lethargy
  • Nausea and vomiting
  • Loss of appetite
  • Generalised itch
  • High blood pressure

A simple blood test (to assess the kidney function) and urine test (for the presence of blood and/or protein) can detect the presence of kidney disease. More investigations may subsequently be necessary to evaluate the cause and the complications of kidney disease. Frequently, kidney disease is picked up incidentally during routine health screening as early kidney disease does not usually present with any symptoms. If you are elderly, or have high blood pressure, diabetes or a family history of hereditary kidney disease, you should be screened for kidney disease at regular intervals.

  • If you have high blood pressure, take your medications and have your blood pressure checked regularly as poorly controlled high blood pressure can result in kidney disease
  • If you have diabetes, ensure that your blood sugar levels are well controlled
  • If you are elderly, or have high blood pressure, diabetes or a family history of hereditary kidney disease, you should see your doctor regularly so that kidney disease, if present can be detected early
  • Eat a healthy and balanced diet
  • Drink enough fluids/water
  • Avoid obesity
  • Stop smoking
  • Engage in suitable amounts of physical activity and exercise
  • Be aware that certain medications can result in or worsen kidney disease

Chronic Kidney Disease is a slow process where both kidneys lose their function gradually. End Stage Kidney Failure occurs when the kidneys are no longer able to remove sufficient waste products, toxins and excess fluids from the body resulting in the accumulation of waste products and toxic substances with the resultant symptoms.

In Singapore, the number of new patients with End Stage Kidney Failure increased from 680 in 1999 to 1264 in 2009. The number of new dialysis patients increased from 618 in 1999 to 851 in 2009 (data extracted from Trends of End Stage Renal Disease in Singapore, A Publication of the National Registry of Diseases Office, Singapore INP-12-1). The commonest cause of kidney failure in Singapore is diabetes (accounting for more than half of the cases), followed by glomerulonephritis and hypertension. Other less common causes of kidney failure include autoimmune disease, polycystic kidney disease, urinary tract obstruction, vesicoureteric reflux, stone disease etc.

Contact Us

38 Irrawaddy Road
Mount Elizabeth Novena Specialist Centre
Singapore 329563
Tel: +65 6694 0642
Fax: +65 6694 0646
Opening hours: 
Mon – Fri: 9 am to 1 pm2 to 5 pm
Sat: 9 am to 12 pm
Sun/PH: Closed

6 Napier Road
Gleneagles Medical Centre
Singapore 258499
Tel: +65 6836 7718
Fax: +65 6836 7719
Opening hours: 
Mon – Fri: 9 am to 1 pm2 to 5 pm
Sat: 9 am to 12 pm
Sun/PH: Closed