Fluorat_Enzyme_Fluorogenic_Assays

URS & FS — User Requirements and Functional Specification

This document describes the controlled interface, user requirements and functional behaviour of Fluorat_Enzyme_Fluorogenic_Assays. The utility is intended for automated verification of laboratory, pharmacopoeial, analytical or manufacturing QC parameters using input.csv and producing a structured output.json result.

Domain limits and critical parameters

• • Enzyme Activity: 90–110% of Label Claim
• • Signal-to-Noise Ratio (SNR): >10
• • Reaction Rate: in linear range (>10 RFU/min for demo)
• • Lumex Fluorat instruments provide low detection limits, critical for kinetic measurements at early reaction stages.
• • The method is widely used in quality control of enzyme preparations, diagnostic kits, and biotechnological processes.
• • Control of reaction rate (kinetics) ensures measurement is performed in the initial linear stage, where rate is proportional to enzyme concentration.
• • Activity must match specification (usually ±10%).
• • Signal-to-Noise Ratio (SNR) must be high (>10) to exclude influence of background fluorescence from solvent or glassware.
• • Reaction temperature is strictly controlled, as enzyme activity is highly temperature-dependent (Q10).
• • Inner filter effect must be excluded at high product concentrations.
• • Calculation of activity based on calibration data or standards.
• • Signal quality assessment via SNR.
• • Control of kinetic parameters (rate).
• • Enzyme Activity: 90-110% LC
• • Signal-to-Noise Ratio: >10
• • Reaction Rate: Linear Range

URS — User Requirements Specification

input.csv contract

BatchNumber,Activity_U_mL,Fluorescence_RFU,Background_RFU,Rate_RFU_min
ENZ-FLUOR-2026-001,102.5,5000.0,50.0,120.0
ENZ-FLUOR-2026-002,98.0,4800.0,45.0,115.0
ENZ-FAIL-LOW-003,85.0,200.0,40.0,5.0

FS — Functional Specification

Example output.json

{
  "utilityId": "fluorat-enzyme-fluorogenic-assays",
  "utilityName": "Fluorat_Enzyme_Fluorogenic_Assays",
  "overallStatus": "PASS|WARNING|FAIL",
  "sourceFile": "input.csv",
  "checks": [
    {
      "parameter": "BatchNumber",
      "value": "ENZ-FLUOR-2026-001",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Activity_U_mL",
      "value": "102.5",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Fluorescence_RFU",
      "value": "5000.0",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Background_RFU",
      "value": "50.0",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Rate_RFU_min",
      "value": "120.0",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    }
  ],
  "criticalFindings": [],
  "warnings": [],
  "generatedFor": "QA/QC review and LIMS integration"
}

Traceability matrix

OQ/PQ test scenarios

QA/QC and change control

• Do not rename columns without updating the validator, documentation and test set.
• Retain input.csv, output.json, executable version, documentation and checksum.
• Before production use, perform IQ/OQ/PQ or equivalent CSV/CSA verification.
• Critical limits must be verified against the approved specification, local SOPs and registration dossier.