MedicatedFeedHomogeneity_Carryover_QualityChecker

Medicated Feed Homogeneity & Carryover

Vet veterinary veterinary vaccines animal health adjuvants aquaculture batch release CSV→JSON

Utility description: Medicated Feed Homogeneity & Carryover

Medicated Feed Homogeneity & Carryover Quality Checker — Control of Homogeneity and Cross-contamination in Medicated Feeds

ℹ️ Utility assesses the quality of medicated feed production (Premixes and Complete Feeds) according to VICH GL49 and GMP requirements:
• Mix Homogeneity: Coefficient of Variation (RSD/CV) must be ≤ 20% (≤ 15% for some drugs).
• Dosing Accuracy: Mean API content must be within 90-110% of target.
• Cross-contamination (Carryover): Residual drug from previous batch must not exceed cleaning limit.
• Cleaning Limit: Calculated based on toxicological data (NOAEL/MLD) of the next product.

⚠️ CRITICAL: High RSD (>20%) means some animals will receive sub-therapeutic doses (resistance risk) while others receive toxic doses!
Exceeding Carryover limit can lead to prohibited residues in meat/milk of animals in the next batch.

Usage:
MedicatedFeedHomogeneityCarryoverQualityChecker.exe → demo mode (console output)
MedicatedFeedHomogeneityCarryoverQualityChecker.exe input.csv output.json → evaluate your data

Input format:
BatchNumber,ProductName,TargetConcentration_ppm,MeanConcentration_ppm,MinConcentration_ppm,MaxConcentration_ppm,RSD_Percent,CarryoverPrevious_ppm,CleaningValidationLimit_ppm,NumberOfSamples

Example:
FEED-2026-MON-001,Monensin Feed,100.0,102.5,85.0,118.0,12.5,0.5,5.0,10

— WHY IS THIS NEEDED?
Production of feeds with antibiotics, coccidiostats, or hormones requires strict mixing control.
Unlike tablets, where each unit is individual, in feed an animal consumes many particles, so overall mass homogeneity is critical.
The issue of "campaign production" makes Carryover control a key safety element.

⚠️ CRITICAL:
• Sampling: At least 10 samples from different points of the mixer or finished product stream are required for homogeneity assessment.
• RSD (CV): Main indicator of mixer performance. Value >20% requires line stoppage and inspection of paddles/augers.
• Carryover: Determined by analyzing "flush sample" or the first portion of the next product.
• Matrix Effect: When analyzing feeds (especially high fat/protein), matrix effects in Chromatography (HPLC/GC) must be considered.

Key features:
• Calculation and check of Coefficient of Variation (RSD)
• Dosing accuracy control relative to target level
• Cross-contamination risk assessment (Carryover)
• Support for VICH GL49 requirements (Residues in Food-producing Animals)
• Generation of reports for feed mill technologists and QA departments (Elanco, Phibro, Zoetis)

Critical parameters:
• RSD (Homogeneity): ≤ 20.0%
• Mean Content: 90-110% of target
• Carryover: ≤ Cleaning Validation Limit
• Number of Samples: ≥ 10

💡 Usage tips:
1. Production Sequence: Plan production from low doses to high to minimize cross-contamination risk.
2. Cleaning: Use "flush batches" between different drugs if dry cleaning is insufficient.
3. Analysis: Use validated methods for API extraction from complex feed matrices.
4. Equipment: Regularly check mixer paddle wear and presence of "dead zones" where feed can stagnate.
5. Documentation: All homogeneity data must be stored as part of the mixing process validation dossier.

⚠️ Note: In veterinary medicine, the "therapeutic window" for feed additives is often wider than for direct-action drugs, but homogeneity requirements remain strict due to the mass nature of consumption.

input.csv

BatchNumber,ProductName,TargetConcentration_ppm,MeanConcentration_ppm,MinConcentration_ppm,MaxConcentration_ppm,RSD_Percent,CarryoverPrevious_ppm,CleaningValidationLimit_ppm,NumberOfSamples
FEED-2026-MON-001,Monensin Sodium 100g/t,100.0,102.5,85.0,118.0,12.5,0.5,5.0,10
FEED-2026-TYL-002,Tylosin 50g/t Premix,50.0,48.0,30.0,65.0,22.0,0.1,2.0,10
FEED-2026-CLEAN-FAIL,Non-Medicated Finisher,0.0,0.0,0.0,0.0,0.0,8.5,5.0,10

URS & FS — User Requirements and Functional Specification

This document describes the controlled interface and behaviour of MedicatedFeedHomogeneity_Carryover_QualityChecker for Medicated Feed Homogeneity & Carryover Quality Checker.

Domain limits URS input.csv FS IQ/OQ/PQ

Domain limits and critical parameters

Key fragments from the source description are shown below. Before production use, limits must be verified against the approved specification, registration dossier and local SOPs.

ℹ️ Utility assesses the quality of medicated feed production (Premixes and Complete Feeds) according to VICH GL49 and GMP requirements:
• Mix Homogeneity: Coefficient of Variation (RSD/CV) must be ≤ 20% (≤ 15% for some drugs).
• Dosing Accuracy: Mean API content must be within 90-110% of target.
• Cross-contamination (Carryover): Residual drug from previous batch must not exceed cleaning limit.
• Cleaning Limit: Calculated based on toxicological data (NOAEL/MLD) of the next product.
⚠️ CRITICAL: High RSD (>20%) means some animals will receive sub-therapeutic doses (resistance risk) while others receive toxic doses!
Exceeding Carryover limit can lead to prohibited residues in meat/milk of animals in the next batch.
BatchNumber,ProductName,TargetConcentration_ppm,MeanConcentration_ppm,MinConcentration_ppm,MaxConcentration_ppm,RSD_Percent,CarryoverPrevious_ppm,CleaningValidationLimit_ppm,NumberOfSamples
Unlike tablets, where each unit is individual, in feed an animal consumes many particles, so overall mass homogeneity is critical.
⚠️ CRITICAL:
• RSD (CV): Main indicator of mixer performance. Value >20% requires line stoppage and inspection of paddles/augers.
• Matrix Effect: When analyzing feeds (especially high fat/protein), matrix effects in Chromatography (HPLC/GC) must be considered.
• Support for VICH GL49 requirements (Residues in Food-producing Animals)
Critical parameters:
• RSD (Homogeneity): ≤ 20.0%
• Carryover: ≤ Cleaning Validation Limit
• Number of Samples: ≥ 10
5. Documentation: All homogeneity data must be stored as part of the mixing process validation dossier.

URS — User Requirements Specification

ID	Requirement	Criticality	Acceptance criterion
URS-001	The utility shall accept an input.csv file for Medicated Feed Homogeneity & Carryover Quality Checker with headers defined in the data contract.	High	The file is processed without manual header editing.
URS-002	The utility shall perform deterministic QC evaluation without machine learning and without probabilistic conformance decisions.	High	Identical input data, rule version and configuration produce reproducible results.
URS-003	The utility shall validate mandatory fields, data types, ranges, units and domain plausibility.	High	Schema, conversion and range errors are explicitly reported.
URS-004	The utility shall apply domain limits and rules from the description, approved specification, registration dossier and local SOPs.	High	Each check has PASS/WARNING/FAIL and a clear message.
URS-005	The utility shall generate output.json with machine-readable results, source values, warnings, failures and critical findings.	High	JSON is suitable for LIMS/ELN/MES integration and QA/QC review.
URS-006	The utility shall preserve traceability between batch/sample, input file, applied rules and final status.	High	Output contains identifiers, checked parameters and audit metadata.
URS-007	The documentation shall support IQ/OQ/PQ, CSV/CSA and review by internal QA or inspectors.	Medium	URS, FS, input/output contract and test scenarios are supplied with the utility.
URS-008	The utility shall be used as a QC decision-support tool and not as a substitute for approved specifications and QA/QP release decision.	Medium	Documentation states change control and limit-verification expectations.

input.csv contract

#	Field	Type	Sample	Purpose
1	`BatchNumber`	string / controlled vocabulary	`FEED-2026-MON-001`	Batch or lot identifier used for traceability.
2	`ProductName`	string / controlled vocabulary	`Monensin Sodium 100g/t`	Product or dosage-form name under evaluation.
3	`TargetConcentration_ppm`	decimal	`100.0`	Component ratio; structural or formulation CQA.
4	`MeanConcentration_ppm`	decimal	`102.5`	Component ratio; structural or formulation CQA.
5	`MinConcentration_ppm`	decimal	`85.0`	Component ratio; structural or formulation CQA.
6	`MaxConcentration_ppm`	decimal	`118.0`	Component ratio; structural or formulation CQA.
7	`RSD_Percent`	decimal	`12.5`	Controlled input parameter for deterministic QC rules.
8	`CarryoverPrevious_ppm`	decimal	`0.5`	Controlled input parameter for deterministic QC rules.
9	`CleaningValidationLimit_ppm`	decimal	`5.0`	Approved limit applied during result evaluation.
10	`NumberOfSamples`	string / controlled vocabulary	`10`	Sample or laboratory specimen identifier.

BatchNumber,ProductName,TargetConcentration_ppm,MeanConcentration_ppm,MinConcentration_ppm,MaxConcentration_ppm,RSD_Percent,CarryoverPrevious_ppm,CleaningValidationLimit_ppm,NumberOfSamples
FEED-2026-MON-001,Monensin Sodium 100g/t,100.0,102.5,85.0,118.0,12.5,0.5,5.0,10
FEED-2026-TYL-002,Tylosin 50g/t Premix,50.0,48.0,30.0,65.0,22.0,0.1,2.0,10
FEED-2026-CLEAN-FAIL,Non-Medicated Finisher,0.0,0.0,0.0,0.0,0.0,8.5,5.0,10

Input validation rules

ID	Field	Rule	Criticality
VR-001	`BatchNumber`	The field shall match an approved dictionary or accepted string representation.	High
VR-002	`ProductName`	The field shall match an approved dictionary or accepted string representation.	High
VR-003	`TargetConcentration_ppm`	The field shall match an approved dictionary or accepted string representation.	High
VR-004	`MeanConcentration_ppm`	The field shall match an approved dictionary or accepted string representation.	Medium
VR-005	`MinConcentration_ppm`	The field shall match an approved dictionary or accepted string representation.	Medium
VR-006	`MaxConcentration_ppm`	The field shall match an approved dictionary or accepted string representation.	Medium
VR-007	`RSD_Percent`	The field shall match an approved dictionary or accepted string representation.	Medium
VR-008	`CarryoverPrevious_ppm`	The field shall match an approved dictionary or accepted string representation.	Medium
VR-009	`CleaningValidationLimit_ppm`	The field shall match an approved dictionary or accepted string representation.	Medium
VR-010	`NumberOfSamples`	The field shall match an approved dictionary or accepted string representation.	Medium

FS — Functional Specification

ID	Function	Implementation
FS-001	CLI execution	Support execution modes: demo mode without arguments and production mode input.csv output.json.
FS-002	CSV import	Read input.csv in UTF-8/CSV-compatible format and validate header and expected columns.
FS-003	Schema validation	Check mandatory fields, column count, unknown key fields and empty mandatory values.
FS-004	Type conversion	Convert numeric, flag and text values; invalid format is recorded as a row-level error.
FS-005	Domain rule engine	Apply rules for Medicated Feed Homogeneity & Carryover Quality Checker, including critical limits from the description and approved specification.
FS-006	Status aggregation	Produce final status: FAIL for critical failure, WARNING for non-critical deviation, PASS for conformance.
FS-007	JSON export	Write output.json with detailed checks, source values, warnings, failures and critical findings.
FS-008	Audit support	Keep result structure suitable for review, deviation investigation and calculation reproduction.
FS-009	Integration contract	Support the scenario LIMS/ELN/MES → input.csv → utility → output.json → portal/admin review.
FS-010	Error handling	Return explicit messages for missing file, empty CSV, invalid schema, output write failure and invalid format.

Example output.json

{
  "utilityId": "medicatedfeedhomogeneity-carryover-qualitychecker",
  "utilityFolder": "MedicatedFeedHomogeneity_Carryover_QualityChecker",
  "package": "Vet",
  "overallStatus": "PASS|WARNING|FAIL",
  "sourceFile": "input.csv",
  "processedAtUtc": "2026-06-10T00:00:00Z",
  "checks": [
    {
      "parameter": "BatchNumber",
      "value": "FEED-2026-MON-001",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-001"
    },
    {
      "parameter": "ProductName",
      "value": "Monensin Sodium 100g/t",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-002"
    },
    {
      "parameter": "TargetConcentration_ppm",
      "value": "100.0",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-003"
    },
    {
      "parameter": "MeanConcentration_ppm",
      "value": "102.5",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-004"
    },
    {
      "parameter": "MinConcentration_ppm",
      "value": "85.0",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-005"
    },
    {
      "parameter": "MaxConcentration_ppm",
      "value": "118.0",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-006"
    },
    {
      "parameter": "RSD_Percent",
      "value": "12.5",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-007"
    },
    {
      "parameter": "CarryoverPrevious_ppm",
      "value": "0.5",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-008"
    },
    {
      "parameter": "CleaningValidationLimit_ppm",
      "value": "5.0",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-009"
    },
    {
      "parameter": "NumberOfSamples",
      "value": "10",
      "status": "PASS|WARNING|FAIL",
      "message": "Deterministic rule-based check result",
      "ruleReference": "FS-RULE-010"
    }
  ],
  "criticalFindings": [],
  "warnings": [],
  "audit": {
    "inputHash": "sha256:<calculated at runtime>",
    "rulesVersion": "<utility executable version>",
    "documentation": "MedicatedFeedHomogeneity_Carryover_QualityChecker.documentation.html"
  }
}

Traceability matrix

URS	FS	Test	Evidence
URS-001	FS-001, FS-002	OQ-001	Verify execution and import of valid input.csv.
URS-002	FS-005, FS-006	OQ-004	Repeat the same dataset and compare output.json.
URS-003	FS-003, FS-004, FS-010	OQ-002, OQ-003	Verify missing columns and invalid types.
URS-004	FS-005, FS-006	OQ-004, PQ-001	Verify critical deviations on real/boundary data.
URS-005	FS-007, FS-009	OQ-005	Verify JSON schema and downstream-system suitability.
URS-006	FS-008	OQ-006	Verify identifiers and audit metadata.
URS-007	FS-008, FS-010	IQ-001, OQ-007	Verify documentation completeness and control evidence.
URS-008	FS-005, FS-008	PQ-002	Verify review workflow and no replacement of QA decision.

IQ/OQ/PQ test scenarios

ID	Scenario	Expected result
IQ-001	Verify executable, input.csv, documentation and checksum availability.	Delivery set is complete; version is recorded.
OQ-001	Valid sample row from input.csv.	PASS or acceptable WARNING according to rules.
OQ-002	Remove a mandatory CSV column.	Schema error or FAIL with missing-column reference.
OQ-003	Place a non-numeric value into a numeric field.	Type-conversion error with row/field reference.
OQ-004	Set a critical parameter outside the limit.	FAIL and critical finding.
OQ-005	Verify output.json structure.	All mandatory sections are present and JSON is valid.
OQ-006	Verify batch/sample traceability.	Input and result identifiers match.
PQ-001	Verify 3–5 real user batches/samples.	Result is confirmed by QC/QA review.
PQ-002	Verify deviation workflow and manual QA decision.	Utility supports review but does not replace approved decision.

QA/QC and change control

Do not rename columns without updating validator, documentation and test set.
Retain input.csv, output.json, executable version and checksum.
Before production use, perform IQ/OQ/PQ or equivalent CSV/CSA verification.
Critical limits shall be verified against the approved specification, registration dossier and local SOPs.
The utility provides structured QC decision support; final release decision remains with QA/QP and approved procedures.

Included in packages

Vet — Veterinary QC Utilities

Vet is designed for veterinary pharmaceuticals and vaccines: adjuvants, antigens, autogenous vaccines, aquaculture, feed/premixes, antimicrobial and antiparasitic products, sterility and batch release.

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