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By Dr. Pramod Kr. Pandey - June 18, 2025

Dr. Pramod Kr. Pandey is a distinguished Analytical Research Expert with over three decades of extensive experience in the pharmaceutical industry. He has contributed his expertise to both leading Indian and global pharmaceutical companies, consistently driving innovation and excellence in analytical research

Learn about monographs and standard testing procedures (STP), key differences, writing process, and benefits with FAQs.

Monograph And Standard Test Procedure (STP): Key Differences Everyone Must Know in 2025

A Pharmaceutical Monograph is a comprehensive scientific document detailing a pharmaceutical’s properties, usage, safety, storage, specifications, and quality control parameters, while a Standard Test Procedure (STP) is a precise analytical document outlining the step-by-step methodology for conducting specific tests, prepared in accordance with the validated analytical method.

In this article, I will discuss the Monograph and Standard Test Procedure (STP), key differences, writing procedure, and advantages with FAQs.

Monograph
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What Is a Monograph?

Pharmaceutical Monograph is a scientific document that describes the pharmaceutical’s properties, use, safety, storage conditions, specifications and quality control testing parameters, along with the method of analysis.

Examples:

  • In-house monograph for Paracetamol
  • USP monograph for Azithromycin
  • EP monograph for pregabalin, etc.

What Is Standard Test Procedure (STP)?

A standard Test procedure is an Analytical document that contains a detailed analysis procedure of any test. STP is designed and prepared according to the method.

Examples:

  • Standard Test Procedure (STP) for Assay test of paracetamol
  • Standard Test Procedure (STP) for Related Substances Test of Paracetamol
  • Standard Test Procedure (STP) for FTIR identification test of paracetamol, etc.

Monograph And Standard Test Procedure (STP): Key Differences

AspectMonographStandard Test Procedure (STP)
DefinitionA detailed document outlining specifications and tests for a substance or product.A specific, step-by-step guide for performing an individual analytical test.
PurposeTo provide a complete quality standard for a pharmaceutical substance or product.To standardise how a particular test is to be performed in the lab.
Document OwnerAnalytical ResearchQuality Control and Quality Assurance
Prepared ByAnalytical scientistQC Chemist
Prepared fromIt may be In-house or pharmacopoeiaPrepared from standard test procedure and analytical control
Content/ScopeFocus only on the method of analysis of a particular testPrepared with the help of a standard test procedure and analytical control. Contains pharmaceutical details like tests, specifications, method of analysis, properties, use, safety, and storage conditions, etc
UsageAnalysis for R&D samplesAnalysis and release of plant samples. Can be used for regulatory submission
TypeIn-houseIt may be In-house or pharmacopoeia (such as IP, BP, USP. etc)
Level of DetailsHigh-level summary of accepted standards.Very detailed and precise instructions for research samples analysis

How To Write A Pharmaceutical Monograph?

Standard test procedure(STP) and Analytical control/specification with test parameters are needed to prepare the monograph. Quality control experts prepare the monograph in coordination with quality assurance and analytical research experts

Include the following sections while writing a pharmaceutical monograph:

  • Structure with molecular formulae: This section contains the structure and molecular formulae of the pharmaceutical
  • Definition: This section contains the content/purity/assay of the pharmaceutical
  • Description: This section contains a concise description of the pharmaceutical, including its physical and chemical properties (colour, form, taste, etc)
  • Solubility: This section contains the solubility of the pharmaceutical in the different solvents
  • Identification: This section contains the identification tests and procedure with acceptance criteria of the pharmaceutical
  • Assay: This section contains the assay test and procedure, with the acceptance criteria of the pharmaceutical
  • Impurities
    • Residue on ignition: This section contains the Residue on ignition test and procedure with acceptance criteria.
    • Heavy metals: This section contains the heavy metal test and procedure with acceptance criteria.
    • Organic impurities/Related substances test/Impurity profile test:This section contains the Organic impurities test and procedure with acceptance criteria.
  • Loss on drying (LOD): This section contains the LOD test and procedure with acceptance criteria.
  • Organic volatile impurities/Residual solvents: This section contains the Organic volatile impurities/Residual solvents test and procedure with acceptance criteria.
  • Packaging and storage condition: This section contains packaging and storage conditions of the pharmaceutical.
  • References:
  • Abbreviations:
  • Safety statement:

Who approves the Monograph?

The Monograph is approved by the quality control head, quality assurance head and analytical research .head.

Note: Additional departments can also be added as per the organisation’s requirement.

Advantages

  • Helpful in managing the quality and safety of the pharmaceutical
  • Regulatory requirement
  • Helpful in technology transfer

Example of a Pharmaceutical monograph

  • In-house monograph
  • United States Pharmacopoeia (USP) monograph
  • European Pharmacopoeia (EP) monograph
  • Indian Pharmacopoeia (IP) monograph
  • British Pharmacopoeia (IP) monograph

Conclusion

I hope this article has helped you understand the Pharmaceutical Monograph and its writing procedure.

Related:

FAQs

What is a monograph in pharmaceutics?

Pharmaceutical Monograph is a scientific document that describes the pharmaceutical’s properties, use, safety, storage conditions, specifications and quality control testing parameters along with the method of analysis.

What is an example of a monograph?

In-house monograph of any pharmaceutical, USP monograph, EP monograph, PP monograph and IP monograph

What is monograph of Indian Pharmacopoeia?

Indian pharmacopoeia monograph is used to perform analysis and manage the quality of the pharmaceuticals.

How to write a drug monograph?

Analytical control and STP (standard test procedure) are used to write a drug monograph.

What is the difference between a monograph and STP?

STP contains only test procedures, whereas a monograph contains test procedures, test parameters and specifications of any pharmaceutical.

References

Abbreviations

STP: standard test procedure

About Dr Pramod Kumar Pandey
Dr. Pramod Kr. Pandey

Dr. Pramod Kr. Pandey is a distinguished Analytical Research Expert with over three decades of extensive experience in the pharmaceutical industry. He has contributed his expertise to both leading Indian and global pharmaceutical companies, consistently driving innovation and excellence in analytical research

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