CollagenFillerQualityChecker

Collagen Filler

dermal fillers endotoxins hyaluronic acid microbiology particles residual solvents rheology sterility

Collagen Filler Quality Checker — Collagen Dermal Fillers (Zyderm, Evolence type) (ISO 13485, EU MDR)

ℹ️  The utility checks collagen source, concentration, purity, residual glutaraldehyde, antigenicity, pH, viscosity, sterility, endotoxins.
ℹ️  Does not use machine learning — rule-based logic only.
⚠️  CRITICAL for injectable products! Collagen source and absence of antigenicity are critical to prevent anaphylaxis. Glutaraldehyde (crosslinker) is toxic!

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

Input format (single row of data):
BatchNumber,Collagen_Concentration_mgPerMl,Source_Verification,Glutaraldehyde_Residual_ppm,Purity_Percent,Viscosity_Pa_s,pH_Value,Antigenicity_Test_Result,Endotoxin_EU_ml,SterilityTest,PackagingIntegrityTest,EthanolPPM,AcetonePPM

Example (Source_Verification/Antigenicity/Sterility/Packaging: 0=fail/reactive/contaminated, 1=pass/safe/intact):
COL-FILL-2026-001,35.0,1,2.5,98.0,12.0,7.2,0,0.15,0,0,700,450

— WHY IS THIS NEEDED?
Collagen dermal fillers — injectable products for wrinkle correction and volume, among the first on the market:
• Zyderm, Zyplast (bovine collagen), Evolence (porcine collagen), CosmoDerm (human recombinant)
• Native or crosslinked collagen type I/III in buffer solution
• Provide natural volume, but require skin test (for animal sources)
⚠️ CRITICAL:
• Collagen Source — MUST BE VERIFIED (bovine, porcine, human). Risk of prion (BSE) or virus transmission if mislabeled!
• Residual Glutaraldehyde ≤ 5 ppm — used for crosslinking collagen (increases longevity), but TOXIC and can cause tissue necrosis if exceeded
• Antigenicity — test must be NEGATIVE (0). Positive reaction means risk of anaphylaxis or granuloma formation
• Purity ≥ 95% — minimizes foreign proteins causing immune response
• Sterility — MANDATORY for injectable products (USP <71> test)
• Endotoxins ≤ 0.5 EU/mL — critical to prevent severe inflammatory reactions (LAL test per USP <85>)
• pH 6.8–7.4 — physiological range, minimizes pain and collagen denaturation
⚠️ Special attention: Collagen fillers have high immunogenicity risk, especially animal-derived. Skin test often required before use. Glutaraldehyde is powerful crosslinking agent, its complete removal or residue control critical for safety. Source traceability mandatory per EU MDR for animal-derived materials (TSE/BSE compliance). Sterility ensured by terminal sterilization or aseptic filling.
Critical parameters:
• Collagen Concentration: 30.0–40.0 mg/mL
• Source: Verified (1 = Pass)
• Purity: ≥ 95.0%
• Glutaraldehyde: ≤ 5 ppm (TOXIC LIMIT)
• Antigenicity: Negative (0)
• pH: 6.8 – 7.4
• Viscosity: 5.0 – 20.0 Pa·s
• Endotoxins: ≤ 0.5 EU/mL
• Sterility: no microbial growth
• Packaging Integrity: no compromise
• Residual solvents: ethanol ≤ 5000 ppm, acetone ≤ 5000 ppm
⚠️ Note: Collagen is protein sensitive to temperature and pH. Denaturation leads to loss of properties and increased immunogenicity. Glutaraldehyde crosslinks collagen molecules, making them more resistant to collagenases, but residual aldehyde toxic to cells. Antigenicity test (in vitro or in vivo) mandatory for every batch. Animal-derived materials require BSE/TSE free certificates.

input.csv

BatchNumber,Collagen_Concentration_mgPerMl,Source_Verification,Glutaraldehyde_Residual_ppm,Purity_Percent,Viscosity_Pa_s,pH_Value,Antigenicity_Test_Result,Endotoxin_EU_ml,SterilityTest,PackagingIntegrityTest,EthanolPPM,AcetonePPM
COL-FILL-2026-001,35.0,1,2.5,98.0,12.0,7.2,0,0.15,0,0,700,450

URS & FS — user requirements and functional specification

This document defines user requirements and functional specification for the quality-control utility. It supports deployment discussion, IQ/OQ preparation and QC workflow integration.

Utility: CollagenFillerQualityCheckerAPI / object: Collagen FillerCategory: Dermal fillers

1. Scope

The Collagen Filler Quality Checker utility is used for Collagen Filler. The actual input.csv is the source of truth for the input structure; control criteria are defined by the executable and the domain description.

The utility does not use machine learning; decisions are produced by deterministic rules.

Categories: Dermal fillers

Tags: dermal fillers, endotoxins, hyaluronic acid, microbiology, particles, residual solvents, rheology, sterility

2. Execution modes

CollagenFillerQualityChecker.exe                            → demo mode (console output)
CollagenFillerQualityChecker.exe input.csv output.json      → evaluate your data

3. Key controlled areas

assay / content
purity and impurities
residual solvents
microbiology and pathogens
pH and physicochemical parameters

4. Domain limits and critical parameters

⚠️ CRITICAL for injectable products! Collagen source and absence of antigenicity are critical to prevent anaphylaxis. Glutaraldehyde (crosslinker) is toxic!
⚠️ CRITICAL:
Collagen Source — MUST BE VERIFIED (bovine, porcine, human). Risk of prion (BSE) or virus transmission if mislabeled!
Residual Glutaraldehyde ≤ 5 ppm — used for crosslinking collagen (increases longevity), but TOXIC and can cause tissue necrosis if exceeded
Antigenicity — test must be NEGATIVE (0). Positive reaction means risk of anaphylaxis or granuloma formation
Purity ≥ 95% — minimizes foreign proteins causing immune response
Sterility — MANDATORY for injectable products (USP <71> test)
Endotoxins ≤ 0.5 EU/mL — critical to prevent severe inflammatory reactions (LAL test per USP <85>)
pH 6.8–7.4 — physiological range, minimizes pain and collagen denaturation
⚠️ Special attention: Collagen fillers have high immunogenicity risk, especially animal-derived. Skin test often required before use. Glutaraldehyde is powerful crosslinking agent, its complete removal or residue control critical for safety. Source traceability mandatory per EU MDR for animal-derived materials (TSE/BSE compliance). Sterility ensured by terminal sterilization or aseptic filling.
Critical parameters:
Collagen Concentration: 30.0–40.0 mg/mL
Source: Verified (1 = Pass)
Purity: ≥ 95.0%
Glutaraldehyde: ≤ 5 ppm (TOXIC LIMIT)
Antigenicity: Negative (0)
pH: 6.8 – 7.4
Viscosity: 5.0 – 20.0 Pa·s
Endotoxins: ≤ 0.5 EU/mL
Sterility: no microbial growth
Packaging Integrity: no compromise
Residual solvents: ethanol ≤ 5000 ppm, acetone ≤ 5000 ppm
⚠️ Note: Collagen is protein sensitive to temperature and pH. Denaturation leads to loss of properties and increased immunogenicity. Glutaraldehyde crosslinks collagen molecules, making them more resistant to collagenases, but residual aldehyde toxic to cells. Antigenicity test (in vitro or in vivo) mandatory for every batch. Animal-derived materials require BSE/TSE free certificates.

Limits stated in the description must be verified against the current approved specification, pharmacopoeial monograph and registration dossier before production use.

5. URS — user requirements

ID	Requirement	Criticality	Acceptance criterion
URS-001	The system shall accept an `input.csv` file for Collagen Filler with the exact columns listed in the “Input data contract” section.	High	A file with the correct header is processed without manual editing; missing mandatory columns produce FAIL/import error.
URS-002	The system shall support execution without arguments in demo mode and execution with `input.csv output.json` for user data.	Medium	Both execution scenarios produce a predictable result or clear diagnostic error.
URS-003	The system shall perform rule-based controls for: assay / content, purity and impurities, residual solvents, microbiology and pathogens, pH and physicochemical parameters.	High	Each controlled parameter receives a status and message; the result does not depend on hidden Excel formulas or ML.
URS-004	The system shall preserve traceability between batch/lot, source values, applied rules and final verdict.	High	Output includes batch identifier, source values, parameter statuses and critical findings.
URS-005	The system shall generate machine-readable `output.json` for LIMS/ELN/MES, batch record and QA/QC review.	High	JSON contains overall status, check array, warnings, failures and source-file reference.
URS-006	The system shall support use in the client validation package: URS/FS, IQ/OQ preparation, installation and operational scenario checks.	High	The document, test scenarios and reproducible CSV/JSON flow are suitable for audit and internal approval.
URS-007	The system shall clearly separate technical data errors from specification nonconformities.	Medium	Schema/type errors are not mixed with pharmacopoeial deviations and are reported separately.

6. input.csv data contract

The source of truth for the input schema is the actual input.csv header. Column names are technical identifiers and are not translated.

#	Column	Type	Unit	Description	Sample	Control rule
1	`BatchNumber`	identifier	as specified	Batch Number	`COL-FILL-2026-001`	mandatory field; used for batch/lot traceability
2	`Collagen_Concentration_mgPerMl`	decimal	mg/ml	Collagen Concentration mg per Ml	`35.0`	numeric value; compared with assay/purity limit from specification or method
3	`Source_Verification`	decimal	as specified	Source Verification	`1`	mandatory numeric value; rule comparison is performed by the utility
4	`Glutaraldehyde_Residual_ppm`	decimal	ppm	Glutaraldehyde Residual ppm	`2.5`	mandatory numeric value; rule comparison is performed by the utility
5	`Purity_Percent`	decimal	%	Purity %	`98.0`	numeric value; compared with assay/purity limit from specification or method
6	`Viscosity_Pa_s`	decimal	as specified	Viscosity Pa s	`12.0`	mandatory numeric value; rule comparison is performed by the utility
7	`pH_Value`	decimal	pH	p H Value	`7.2`	mandatory numeric value; rule comparison is performed by the utility
8	`Antigenicity_Test_Result`	decimal	as specified	Antigenicity Test Result	`0`	mandatory numeric value; rule comparison is performed by the utility
9	`Endotoxin_EU_ml`	decimal	as specified	Endotoxin EU ml	`0.15`	numeric value; critical safety attribute compared with endotoxin limit
10	`SterilityTest`	boolean / flag	0/1	Sterility Test	`0`	valid flag required; prohibited organisms and growth are normally expected as 0 / absent
11	`PackagingIntegrityTest`	decimal	as specified	Packaging Integrity Test	`0`	mandatory numeric value; rule comparison is performed by the utility
12	`EthanolPPM`	decimal	ppm	Ethanol PPM	`700`	numeric value; checked as residual solvent against the applicable limit
13	`AcetonePPM`	decimal	ppm	Acetone PPM	`450`	numeric value; checked as residual solvent against the applicable limit

CSV example

BatchNumber,Collagen_Concentration_mgPerMl,Source_Verification,Glutaraldehyde_Residual_ppm,Purity_Percent,Viscosity_Pa_s,pH_Value,Antigenicity_Test_Result,Endotoxin_EU_ml,SterilityTest,PackagingIntegrityTest,EthanolPPM,AcetonePPM
COL-FILL-2026-001,35.0,1,2.5,98.0,12.0,7.2,0,0.15,0,0,700,450

7. FS — functional specification

ID	Function	Implementation description
FS-001	CLI entry point	The executable `CollagenFillerQualityChecker.exe` supports demo mode and `input.csv output.json` processing mode.
FS-002	CSV parser	The import module reads CSV, validates header, column presence/order, value count and encoding. Decimal values are expected with a dot separator.
FS-003	Field conversion	Each column is converted to the expected type: identifier, text, decimal number, date/time or boolean flag.
FS-004	Domain rule engine	For Collagen Filler, explicit rules are applied: range, minimum, maximum, absence of prohibited flag, data completeness or calculation-based check.
FS-005	Criticality handling	Critical violations produce FAIL; non-critical deviations and incomplete data produce WARNING; full conformance produces PASS.
FS-006	JSON writer	`output.json` stores overall status, per-parameter results, source values, warnings, failures and diagnostic messages.
FS-007	Integration contract	The CSV → JSON format is stable for invocation from LIMS/ELN/MES, scheduled task or wrapper service.
FS-008	Error handling	Schema error, missing file, non-numeric value or JSON write failure returns diagnosable error without silent PASS.

8. output.json contract

The output file must be suitable for automated processing, audit review and correlation with the source input.csv row.

{
  "utility": "CollagenFillerQualityChecker",
  "api": "Collagen Filler",
  "batchNumber": "COL-FILL-2026-001",
  "overallStatus": "PASS|WARNING|FAIL",
  "checkedAtUtc": "2026-05-18T00:00:00Z",
  "checks": [
    {
      "parameter": "BatchNumber",
      "value": "COL-FILL-2026-001",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Collagen_Concentration_mgPerMl",
      "value": "35.0",
      "unit": "mg/ml",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Source_Verification",
      "value": "1",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Glutaraldehyde_Residual_ppm",
      "value": "2.5",
      "unit": "ppm",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Purity_Percent",
      "value": "98.0",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Viscosity_Pa_s",
      "value": "12.0",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "pH_Value",
      "value": "7.2",
      "unit": "pH",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "Antigenicity_Test_Result",
      "value": "0",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    }
  ],
  "criticalFindings": [],
  "sourceFile": "input.csv"
}

9. OQ/PQ test scenarios

ID	Scenario	Expected result
TC-001	Valid CSV with expected header and sample row	All rows are processed; output contains PASS/WARNING/FAIL and parameter-level detail.
TC-002	A mandatory input.csv column is missing	Import is rejected or the row receives FAIL with schema reference.
TC-003	A numeric field contains text or a blank value	Type conversion error is recorded; the result is not hidden as PASS.
TC-004	A parameter is outside specification or critical limit	Critical parameters produce FAIL; non-critical deviations produce WARNING according to the rule.
TC-005	Positive pathogen/microbiological flag or microbiological limit excursion	Critical FAIL is produced with the offending parameter.
TC-007	Residual solvent above applicable limit	FAIL is produced with solvent name and measured value.

10. QA/QC, CSV and change control

Before production use, the client records executable version, checksum, specification/monograph version, test CSV, expected JSON and IQ/OQ results.
Column names must not be changed without updating the validator and test scenarios.
The source CSV, output.json and utility version should be stored together as an evidence package.
Any change in control rules must go through change control and repeated OQ scenario verification.

Included in packages

Dermal Fillers QC Suite

Package for injectable implants and dermal fillers: hyaluronic acid, CaHA, PLLA, PMMA, collagen and related tests.

Open