Skip Ribbon Commands
Skip to main content
Clin Assoc Prof Sadhana Nadarajah

Clin Assoc Prof Nadarajah Sadhana

Fellow of the Academy of Medicine, Member of the Royal College Of O&G, MBBS

Head & Senior Consultant

KK Women's and Children's Hospital

Specialty: Obstetrics & Gynaecology, Menopause, Endometriosis, Reproductive Medicine

Sub-specialties: Assisted Reproductive Program, Infertility, Polycystic Ovarian Syndrome, Endocrinology, Adolescent Gynaecology, Reproductive Surgery

Clinical Appointments

  • Head & Senior Consultant Reproductive Medicine KK Women's and Children's HospitalKK Women's and Children's Hospital
  • Senior Consultant KKIVF (In-vitro Fertilisation) Centre KK Women's and Children's HospitalKK Women's and Children's Hospital
  • Head, Adolescent Gynae Unit Reproductive Medicine KK Women's and Children's HospitalKK Women's and Children's Hospital


Clin Assoc Prof Sadhana Nadarajah is a Senior Consultant in Department of Reproductive Medicine in KK Women’s & Children’s Hospital (KKH). She is also the Head of Adolescent Gynaecology Unit in KKH.
She received her Bachelor of Medicine and Bachelor of Surgery (MBBS) from the National University of Singapore in 1990 and obtained her post graduate training in OBGYN in 1996. She trained in Adolescent Gynaecoloy in Queen Charlotte’s Hospital in London and has been practicing IVF for the last 18 years.
Apart from clinical work, Dr Sadhana is also very involved in teaching the undergraduate and postgraduate medical students.


  • 1999 to date Fellow of the Academy of Medicine
  • 1996 Member of the Royal College Of O&G
  • 1990 MBBS

Professional Appointments and Committee Memberships

  • Clinical Associate Professor, Duke-NUS Medical School - 2022 to Present
  • Adjunct Assistant Professor, Duke-NUS Medical School - 2009 to 2021
  • Medical Undergraduate Examiner, Yong Loo Lin School of Medicine - 2004 to present
  • Clinical Tutor - 1996
  • Senior Consultant, Department of Reproductive Medicine - Present
  • Head, Adolescent Gynae Unit - Present
  • Examiner, Medical Undergraduate Examiner YLL - Present
  • Member, O&G Society - Present
  • MOH appointment, to Assisted Reproduction Services Working Committee - Present
  • Senior Consultant, MOH, Regulatory Policy & Legislation Division - 2017
  • MOH appointment, to Pro-Tem Subcommittee for Exemption from Commercial Trading Clauses (Therapy) - 2017
  • Advisory Committee on Biobanking to MOH - 2014
  • Non-executive director to Babes Pregnancy Crisis Support Limited - 2013
  • Co Chairman Gynaecological Surgery section of KK Medical procedures Accreditation Committee - 2010
  • Chairperson of Adolescent Gynaecology/sexual sub-health committee - 2010
  • Organising Committee 6th Singapore Congress of O&G - 2007
  • Singapore Advisory Work-Group on HPV Vaccine - 2006
  • HPB Workgroup for Adolescent Health Promotion Blueprint - 2006
  • National Adolescent Health Committee - 2006
  • Member, British Society For Paediatric & Adolescent Gynaecology - 2001
  • Member, North American Society For Pediatric &Adolescent Gynecology - 2000 to 2004
  • Visiting, Consultant to School Health Services - 1999 to 2006


  • Singapore Health Quality Service Award (Star), Apr 2012 - Mar 2013
  • Singapore Health Quality Service Award (Silver), Apr 2010 - Mar 2011
  • Excellent Service Star Award, 2010
  • Service from the heart award, 2009
  • Service from the heart award, 2008
  • Excellent Service Silver Award, 2007
  • Excellent Service Silver Award, 2006
  • Excellent Service Silver Award, 2004

Research Interests


  • The Asian Textbook of Emergency Medicine Paediatric section
    (Author for chapter on Paediatric emergencies Gynaecological Disorders
  • Teenage abortions at KKH, XVIII FGO World Congress 2006
  • Extended Culture and Blastocyst transfer of cryopreserved D2 - D3 embryos; FSA Meeting 2004
  • Uterovaginal anomalies in KK Hospital – our experience: SingHealth ASM 2004
  • Profile of Teenagers Seeking an Abortion; 1st Singapore Malaysia Conference in O&G 2003
  • Laparoscopic Oopharectomy in testicular fermising syndrome; North American Society of Pediatric & Adolescent Gynaecology Annual meeting 2002
  • Uterovaginal anomalies in KK Hospital – our experience: SingHealth ASM 2004
  • Complications in Adolescent pregnancies FIGIJ meeting 1999

Research Trials

  • To study the influence of pharmacogenomics factors on pharmacokinetics and pharmacodynamics of clomiphene in Asian normogonadotrophic anovulatory patients. SingHealth Foundation Grant, $150,000, Co-I (PI - Balram Chowbay), 2014 - 2016
  • Analysis of reproductive outcomes in in-vitro fertilisation (IVF). PI, 2014
  • Analysis of reproductive outcomes in in-vitro fertilisation (IVF). PI, 2014
  • Ovulation Induction with Letrozole versus Clomiphene Citrate in Asian women with PCOS: A prospective randomised controlled trial. Co-I (PI - Matthew), 2013 - 2015
  • Serum LH of women after starting GnRH antagonist in IVF stimulation cycles: who are at risk of profound suppression of endogenous LH production and how is treatment outcome affected? SingHealth Duke-NUS OBGYN (ACP) Grant Award (awarded 22/3/2013), $10,000, Co-I (PI - Steven), 2013 - 2014
  • Development of complementary diagnostic technology for embryo discrimination. Co-I (PI - HH Tan), 2013 - 2014
  • Human embryo cryopreservation: one-step slow freezing does it all? Co-I (PI - Chong Yee Shen), 2013
  • Use of GnRH antagonist pre-treatment for IVF/ICSI antagonist cycles scheduling. Co-I (PI - Veronique), 2013
  • "Rescue Technique"- the use of overnight matured oocytes to increase pregnancy potential. Co-I (PI - Lee Joo Mong), 2013
  • Fresh embryo transfer - does the days really matter? Co-I (PI - Farhana M Rafik), 2013
  • Comparison of outcome of fresh embryo transfer using sperm retrieved by MESA, TESE & TESA. Co-I (PI - Matthew), 2013
  • Validation of ovarian tissue cryopreservation for fertility preservation. Co-I (PI - Jessie), 2013 - 2015
  • Polycystic ovarian syndrome in Singapore: Norms for hyperandrognemia and metabolic syndrome. Co-I (PI - Yong Eu Leong), 2013
  • Knowledge, attitudes and perception of oocyte donation of women in Singapore. Co-I (PI - Jerry), 2013
  • GnRH agonist trigger and OHSS: Relook at 'freeze all strategy'. Co-I (PI - HH Tan), 2013
  • Significance of Progesterone level on Day 8 post embryo transfer during Long down regulation ART cycles. Co-I (PI - Sau Po Yi, Matthew Lau), 2012 - 2014
  • Serum Progesterone levels and pregnancy in controlled ovarian stimulation cycles using antagonist protocol for in vitro fertilization. Co-I (Qi Maili, Matthew Lau), 2012 - 2014
  • Predictors and outcomes of surgical sperm retrieval. Co-I (PI - TY Tan), 2012 - 2013
  • Patients attitudes towards single embryo transfer and multiple pregnancy & review of multiple pregnancy rates after elective single embryo transfer. Co-I (PI - TY Tan), 2012 - 2013
  • Lifestyle behaviour in women undergoing In Vitro Fertilisation in Singapore: A cross sectional survey. Co-I (PI - Matthew), 2012
  • Social Oocyte Freezing: A survey amongst Singapore female medical students. Co-I (PI - Andy Tan, Shu Qi), 2012
  • Dehydroepiandrosterone (DHEA) treatment for poor responders in IVF patients: A prospective randomised controlled trial. Singhealth Foundation Grant - SHF/CTG034/2010 - Co-I (PI - Veronique) $199,000, 2011 - 2014
  • A Clinic based project on improving outcomes in unmarried teen pregnancies. PI, 2009 to 2011
  • A prospective randomized trial comparing use of vaginal utrogestan and intramuscular progesterone for luteal phase support following intracytoplasmic sperm injection. PharMed Project Based Research Grant - Co-I (PI - Kelly Loi) $12,900, 2007 - 2011
  • A Qualitative Analysis and Survey of the Knowledge, Attitudes and Sexual Health Behaviours of Pregnant Adolescents. Co-I (PI - Janice), Pending
  • What is the best way to achieve intra-ovarian haemostasis after cystectomy? A comparison between Tisseel, FloSeal and Bipolar diathermy with regards to their impact on ovarian reserve. Co-I (PI - Janice), Pending