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.