The short answer. Every DNB and DrNB trainee needs a thesis accepted by NBEMS to stay eligible for the final exam. Submit your ethics-approved thesis protocol within 180 days of joining (90 days for the 2-year post-diploma DNB) and start the research on day 181. The thesis itself goes in within 26 months of joining (15 months for post-diploma), online at natboard.edu.in. The assessment fee is ₹3,500 plus 18% GST.
This page is checked line by line against the NBEMS Guidelines for Thesis Protocol and Thesis Submission (April 2022) and the NBEMS notice of 7 November 2025. NBEMS does revise its rules. If a newer NBEMS notice says something different, follow the notice.
| Step | 3-year DNB / DrNB | 2-year post-diploma DNB |
|---|---|---|
| Submit IEC-approved thesis protocol | Within 180 days of joining | Within 90 days of joining |
| Start the research | From day 181 | From day 91 |
| Finish the research | By 24 months | By 15 months |
| Submit the thesis for assessment | By 26 months | By 15 months |
| Last date with ₹10,000 late fee | 27 months | 16 months |
| Maximum length | 80 pages, everything included | |
| Assessment fee | ₹3,500 + 18% GST (fresh), ₹1,800 + 18% GST (modified) | |
Is a thesis compulsory for DNB and DrNB?
Yes. NBEMS states that thesis submission is essential for every DNB trainee as partial fulfilment of eligibility for the degree, and its guidelines apply the same rule to DrNB. Without a thesis submission acknowledgement number, you cannot even fill the form for the final theory exam.
Acceptance matters as much as submission. If you fail theory and your thesis has not been accepted, you cannot sit the next theory exam until it is. If you pass theory and appear in the practical while the thesis is still pending, you cannot take the next practical exam until it is accepted. Treat the thesis as a gate in front of the degree, not paperwork at the end of it.
When is the DNB thesis protocol submission deadline?
Within 180 days of joining for 3-year broad and super specialty trainees. Within 90 days for 2-year post-diploma DNB. By that date your hospital's Institutional Ethics Committee (IEC) must have approved the protocol and the approval must reach NBEMS.
The penalty is heavy. A late protocol makes you ineligible for the first final theory exam you would otherwise have taken. You also cannot submit the thesis later without the protocol acknowledgement number, so one missed deadline pushes back everything after it. These timelines apply to all trainees registered from the July 2020 admission session onwards.
180 days sounds generous. It is not, once you account for the IEC. Your committee may meet only once a month, or less, so find out its meeting dates in your first week and write the protocol backwards from the meeting you need to catch.
How do you submit the thesis protocol to NBEMS?
- Write the protocol within the NBEMS word limits in the table below.
- Have it reviewed and approved by your hospital's IEC. Ethics approval is mandatory before any research work starts.
- Your hospital completes the Thesis Protocol Approval (TPA) annexure.
- Submit the approved protocol on the NBEMS portal at natboard.edu.in/thesisonline/verifyprotocol. Online submission is required for trainees who joined from the 2021 academic session onwards.
- Save the acknowledgement number. You will need it to submit the thesis.
| Protocol section | NBEMS limit |
|---|---|
| Title | 120 characters, including spaces |
| Structured synopsis | 250 to 300 words |
| Introduction | 300 to 500 words |
| Review of literature | 800 to 1,000 words |
| Aims and objectives | Up to 200 words |
| Material and methods | 1,200 to 1,600 words |
| References | 10 to 25, ICMJE style |
What if your hospital does not have an ethics committee?
The IEC that approves your protocol has to be registered with the National Ethics Committee Registry for Biomedical and Health Research (NECRBHR) through naitik.gov.in. If your hospital has no registered IEC, NBEMS lets it tie up with a nearby institution's NECRBHR-registered committee. The hospital then has to file a Memorandum of Understanding with the NBEMS Accreditation Department.
Arranging this is the hospital's responsibility, but the deadline that slips is yours. In your first week, ask your DNB coordinator two questions: is our IEC registered with NECRBHR, and if not, is an MoU with another institution already on file with NBEMS? An approval from a committee that meets neither condition may not be accepted.
What is the last date for DNB thesis submission?
You have two dates to track, and you need to meet both.
The first is personal. For 3-year DNB and DrNB, it is 26 months from your date of joining; for post-diploma DNB, 15 months. NBEMS allows one more month with a ₹10,000 late fee, which takes you to 27 and 16 months. After that you lose eligibility for that exam session and have to meet the cutoff for the next one.
The second is the session cutoff printed in the Information Bulletin for the final exam you plan to sit. For the DNB Final Theory Exam of December 2025, that cutoff was 30 September 2025. NBEMS extended it to 12 November 2025, stated that no further extension would be given, and declared trainees who still had not submitted ineligible for that session.
Plan to the original date. The December 2025 extension was granted after trainees asked for it. NBEMS is not obliged to repeat it, and it said so in the same notice.
How do you submit your thesis to NBEMS?
Online only, through natboard.edu.in/thesisonline/index. NBEMS rejects applications sent by any other route. You upload a soft copy and send a bound hard copy with these enclosures:
- A printout of the online application form, signed and stamped by every authority named on it
- The synopsis of your thesis
- A copy of your NBEMS registration letter
- The Thesis Protocol Approval
- The Publication annexure
- A declaration that the research is bonafide and was carried out by you at your DNB or DrNB institute, signed by you, your guide, your co-guide if you have one, and the head of the institution, with rubber stamp. Without it, NBEMS does not consider the thesis.
Check every field before you press submit. NBEMS does not edit, correct or change information in a submitted application under any circumstances. If your correspondence address changes afterwards, email thesis@natboard.edu.in so the assessment result reaches you.
What are the NBE thesis format guidelines?
The entire thesis has to fit in 80 pages. That count includes text, figures, references, annexures and certificates, so the limit is tighter than it looks.
| Item | NBEMS requirement |
|---|---|
| Length | 80 pages maximum, everything included; no blank pages |
| Paper and printing | A4 (21 × 29.7 cm), printed on both sides |
| Line spacing | 1.5 (proforma, consent form, master chart and information sheet may be single spaced) |
| Font | Times New Roman, Arial or Garamond, size 12 |
| Margins | 1 inch on all four sides |
| Page numbers | Every page numbered: Arabic numerals at the bottom centre, lower-case Roman numerals for front pages |
| Chapters and appendices | Each starts on a new page |
| Tables and figures | Caption at the bottom, on the same page; describing text above, on the same page |
| Suggested chapter lengths | Introduction 2 pages, review of literature 10 to 12 pages, discussion 8 to 10 pages |
| Appendices | Data collection tools, informed consent form, patient information sheet, master chart and Thesis Protocol Approval |
The review of literature is where the page count usually goes. Written at protocol length it fits; written like a textbook chapter it will not. NBEMS asks for contemporary, relevant literature only.
How much is the NBE thesis fee?
| Fee | Amount |
|---|---|
| Fresh thesis assessment | ₹3,500 + 18% GST |
| Modified thesis assessment | ₹1,800 + 18% GST |
| Late submission, up to one month after the cutoff | ₹10,000 |
You pay online with a credit or debit card issued in India, or by net banking. Payment gateway charges are added on top. Some pages online still quote ₹3,000 and ₹1,500; the NBEMS guidelines list the amounts above.
What happens if NBEMS asks you to modify your thesis?
The assessor's observations tell you what to change, and you modify strictly according to them. Flag every change so the assessor can find it. You get 6 weeks from the date of the NBEMS communication to resubmit.
The modified thesis must be hard bound with the standard front cover, labelled MODIFIED THESIS. Bind in a summary of the thesis and the modifications made, the signed and stamped application form, and a fresh bonafide declaration certifying that the thesis was modified as the assessor suggested. The fee is ₹1,800 plus 18% GST.
What happens if you miss a deadline or the thesis is not accepted?
| Situation | Consequence under NBEMS rules |
|---|---|
| Protocol not submitted within 180 or 90 days | Not eligible for the first final theory exam you would have taken. The thesis cannot be submitted without the protocol acknowledgement number. |
| Thesis not submitted by the deadline | Not eligible for the immediate final theory exam. The exam form cannot be filled without a thesis submission acknowledgement number. |
| Failed theory, thesis not yet accepted | Not eligible for the next theory exam until the thesis is accepted. |
| Passed theory, appeared in practical, thesis not yet accepted | Not eligible for the next practical exam until the thesis is accepted. |
How do you check your NBE thesis status?
Wait four months. NBEMS does not answer status queries earlier than 4 months after submission. After that, email thesis@natboard.edu.in with your name, subject, registration number and date of submission; NBEMS ignores queries missing any of these. You can also call 011-45593000 or write through the NBEMS Communication Web Portal. NBEMS replies only to the trainee, not to anyone writing on the trainee's behalf.
A realistic timeline for a 3-year DNB thesis
Work backwards from month 26, not forwards from month 1. Most slippage happens in the first six months, when nothing seems urgent.
| Months from joining | What should be done |
|---|---|
| Month 1 | Topic agreed with your guide. IEC registration status and meeting dates confirmed. |
| Months 1 to 4 | Protocol written to NBEMS word limits, sample size calculated, protocol submitted to the IEC. |
| By day 180 | IEC-approved protocol submitted to NBEMS. Acknowledgement number saved. |
| Day 181 to month 18 | Data collection. NBEMS suggests choosing a study whose cases you can collect in about 6 to 12 months. |
| Months 18 to 22 | Data collection closed, statistical analysis done, results tables drafted. |
| Months 22 to 24 | Complete draft reviewed by your guide. NBEMS expects the research finished by month 24. |
| Months 24 to 25 | Corrections, format check against the 80-page limit, declarations signed. |
| By month 26 | Submitted online and hard copy dispatched. |
On the 2-year post-diploma DNB the same steps compress hard: protocol by day 90, research from day 91, and the thesis in by month 15.
Choosing a thesis topic you can actually finish
Topics that sound impressive but cannot be done in your setting are the most common way to lose a year. NBEMS itself advises choosing a case load your hospital's attendance and records can supply within the data collection window.
Signs of a good topic
- Enough cases at your hospital to reach the sample size in 6 to 12 months
- Your guide has real expertise in the area
- Ethics review should be simple
- The statistics are ones you can explain at the viva
- Every investigation it needs is available where you train
Topics to avoid
- Rare diseases, because you will not reach the sample size
- Long follow-up, because the 26-month deadline will not wait
- Multicentre designs, which add coordination you do not control
- Anything that depends on equipment your hospital does not have
If you are already behind, a retrospective study on existing hospital records can be quicker to collect. It still needs IEC approval and a protocol filed on time.
Doing a DNB thesis in a private hospital
Private hospital training gives you patient volume, modern investigations and a defined population. It usually does not give you seniors who have been through the thesis, an in-house statistician, a research office or journal access. Your guide may also be running a busy practice.
Three habits get more out of a busy guide. Bring specific questions rather than asking them to "check this". Send complete sections instead of fragments. Batch everything into one planned meeting, even if the only free slot is 7 AM or after a list.
Statistics is the usual sticking point. You can learn the basics yourself, find a freelance statistician through a nearby medical college, or use a statistical analysis service. Whichever you choose, understand every test well enough to defend it, because the examiners will ask.
Final checklist before you submit
- Protocol acknowledgement number from NBEMS
- Thesis within 80 pages, including annexures and certificates
- A4, both sides, 1.5 spacing, size 12 Times New Roman, Arial or Garamond, 1-inch margins
- Online application completed, printed, signed and stamped by all named authorities
- Synopsis of the thesis
- Copy of your NBEMS registration letter
- Thesis Protocol Approval
- Publication annexure completed
- Bonafide declaration signed by you, your guide, co-guide and head of institution, with stamp
- Informed consent form, patient information sheet and master chart in the appendices
- Fee paid: ₹3,500 + 18% GST
- Every number in the results matches the master chart
On plagiarism: the NBEMS guidelines treat it as serious misconduct but do not publish a numeric similarity limit. Run a similarity check anyway, and ask your institution what threshold it applies.
Can you publish your DNB thesis?
NBEMS wants you to. The Publication annexure bound into every thesis asks whether you are willing to publish it once accepted, how soon, in what form, and in which journals. It also points trainees to Astrocyte, the NBEMS journal for postgraduate medical education and research.
An accepted thesis is the easiest publication you will ever have. The data exist, the ethics approval exists and the analysis is done. What is left is cutting 80 pages into a journal-length original article. Our guide to converting your thesis into a published article walks through it.
Statistics, format checks and thesis to publication
We run your statistical analysis and explain every test so you can defend it at the viva. We check your draft against the NBEMS format rules, and once the thesis is accepted we help turn it into a journal article. The research, the thesis and the bonafide declaration stay yours.
Ask about DNB thesis support →Sources
- NBEMS. Guidelines for Thesis Protocol and Thesis Submission (PDF, April 2022).
- NBEMS. Notice: Extension of last date of thesis submission for DNB Final Exam, December 2025 (7 November 2025).
- NBEMS. Notice: Online web portal for submission of thesis protocol (29 November 2022).
- NBEMS online thesis portal.