Neftaly: Steps in Validating a New Laboratory Test
Before any laboratory test can be trusted to deliver accurate and reliable results, it must go through a structured validation process. At Neftaly, we guide laboratories through each step of test validation to ensure compliance, consistency, and confidence in data.
Whether you’re implementing a standard method, adapting an existing one, or developing a novel procedure, method validation confirms that the test performs as intended in your specific setting.
Neftaly’s Step-by-Step Process for Laboratory Test Validation
1. Define the Test Purpose and Scope
- Identify what the test is intended to detect or measure
- Specify sample type, target analyte, expected concentration range
- Determine intended use: diagnostic, environmental, research, regulatory
Goal: Establish clear validation objectives.
2. Develop or Select the Test Method
- Choose or adapt a method from a recognized source (e.g., ISO, EPA, USP)
- Document step-by-step procedures in a draft Standard Operating Procedure (SOP)
- Identify equipment, reagents, materials, and required conditions
Goal: Standardize the method for reproducibility.
3. Identify Performance Characteristics to Validate
Key parameters include:
- Accuracy – How close results are to the true value
- Precision – Repeatability and reproducibility of results
- Specificity – Ability to detect only the target analyte
- Linearity – Performance across the expected concentration range
- Limit of Detection (LOD) and Limit of Quantification (LOQ)
- Robustness – Performance under slight variations (e.g., temp, pH)
- Ruggedness – Reproducibility across labs/operators/instruments
Goal: Know what to measure and how.
4. Design and Conduct Validation Experiments
- Use reference standards, control samples, and test matrices
- Apply statistical tools to analyze data (e.g., standard deviation, recovery rates)
- Include blanks, spikes, replicates, and inter-lab comparisons if applicable
Goal: Collect reliable, verifiable data on method performance.
5. Evaluate Results and Set Acceptance Criteria
- Compare results against predefined performance thresholds
- Investigate any outliers or inconsistencies
- Confirm that results meet internal and external quality expectations
Goal: Verify the method performs reliably within your lab’s conditions.
6. Finalize SOPs and Train Staff
- Document the validated procedure in a finalized SOP
- Train personnel on proper execution and documentation
- Include QC procedures, troubleshooting, and safety measures
Goal: Ensure consistent and compliant application of the test.
7. Document and Report the Validation
- Compile all validation data, methods, and interpretations into a validation report
- Ensure traceability, version control, and readiness for audits
- Include conclusions, limitations, and recommendations
Goal: Create a complete, audit-ready validation file.
Neftaly’s Support for Test Validation
- ✅ Method development and optimization
- ✅ Statistical data analysis and interpretation
- ✅ SOP writing and review
- ✅ Compliance with ISO/IEC 17025, GLP, GxP, and industry standards
- ✅ Training and validation audits
Start strong with Neftaly.
Our validation process ensures your test methods are not only technically sound—but legally defensible, regulator-approved, and scientifically robust.
Need a validation plan or template? Contact Neftaly today.