InsulinHumanPremixQualityChecker
Insulin Human Premix
Insulin Human Premix Quality Checker — Biologic Drug (NPH+Soluble Mix) (Ph. Eur., USP)
ℹ️ The utility checks fraction ratio, resuspendability, particle size, proinsulin, sterility.
ℹ️ Does not use machine learning — rule-based logic only.
⚠️ CRITICAL! Ratio 30/70 (or other), Resuspendability, Proinsulin ≤10 ppm, Sterility!
Usage:
InsulinHumanPremixQualityChecker.exe → demo mode
InsulinHumanPremixQualityChecker.exe input.csv output.json → evaluate data
Input format:
BatchNumber,Total_Potency_IU_per_ml,Short_Acting_Percent,Intermediate_Acting_Percent,pH_Value,Zinc_Content_mcgPerMl,Protamine_Content_mcgPerMl,Proinsulin_Content_ppm,Related_Proteins_Percent,High_Molecular_Weight_Proteins_Percent,Particle_Size_D50_um,Resuspension_Time_Min,SterilityTest,Endotoxin_EU_ml,Appearance_After_Resuspension
Example:
INS-MIX-2026-001,100.0,30.0,70.0,7.2,40.0,450.0,3.0,0.4,0.1,4.5,1.0,0,0.02,0
— WHY IS THIS NEEDED?
Human Insulin Premix (e.g., 30/70) — suspension containing soluble insulin (short-acting) and isophane insulin (intermediate-acting):
• Fraction Ratio: Critical for glycemic profile. Error in ratio leads to hypoglycemia or hyperglycemia.
• Resuspendability: Patient must easily obtain uniform white suspension by shaking. Poor resuspendability leads to inaccurate dosing.
• Particle Size: Insulin-protamine crystals must be small and uniform for accurate syringe drawing.
• Protamine: Required for NPH (isophane) complex formation. Amount strictly regulated.
• Proinsulin and Aggregates: Immunogenicity risk.
• Sterility and Endotoxins: Absolutely mandatory.
⚠️ CRITICAL:
• Total Potency: 95–105% of label claim
• Short/Intermediate Ratio: within ±5% of nominal (e.g., 30±5%)
• Proinsulin: ≤ 10 ppm
• Aggregates (HMW): ≤ 0.5%
• Particle Size (D50): ≤ 10 µm
• Resuspension Time: ≤ 2 min
• Appearance: Uniform white suspension without clumps
• Sterility: No growth
• Endotoxins: ≤ 0.5 EU/mL
⚠️ Note: Utility focuses on physical characteristics of suspension (particle size, resuspension time) distinguishing premixes from solutions. Incorrect fraction ratio or poor resuspendability are most common causes of therapeutic failure with premixes. Protamine control important for crystal phase stability.
input.csv
BatchNumber,Total_Potency_IU_per_ml,Short_Acting_Percent,Intermediate_Acting_Percent,pH_Value,Zinc_Content_mcgPerMl,Protamine_Content_mcgPerMl,Proinsulin_Content_ppm,Related_Proteins_Percent,High_Molecular_Weight_Proteins_Percent,Particle_Size_D50_um,Resuspension_Time_Min,SterilityTest,Endotoxin_EU_ml,Appearance_After_Resuspension INS-MIX-2026-001,100.0,30.0,70.0,7.2,40.0,450.0,3.0,0.4,0.1,4.5,1.0,0,0.02,0
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.
1. Scope
The Insulin Human Premix Quality Checker utility is used for Insulin Human Premix. 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: Global API, Global API expansion
Tags: antivirals, API, assay, biologics, biosimilars, endotoxins, essential medicines, fixed-dose combinations, generics, global market, impurities, injectables, market map, oncology, sterility
2. Execution modes
InsulinHumanPremixQualityChecker.exe → demo mode InsulinHumanPremixQualityChecker.exe input.csv output.json → evaluate data
3. Key controlled areas
- assay / content
- purity and impurities
- microbiology and pathogens
- pH and physicochemical parameters
4. Domain limits and critical parameters
- ⚠️ CRITICAL! Ratio 30/70 (or other), Resuspendability, Proinsulin ≤10 ppm, Sterility!
- ⚠️ CRITICAL:
- Total Potency: 95–105% of label claim
- Short/Intermediate Ratio: within ±5% of nominal (e.g., 30±5%)
- Proinsulin: ≤ 10 ppm
- Aggregates (HMW): ≤ 0.5%
- Particle Size (D50): ≤ 10 µm
- Resuspension Time: ≤ 2 min
- Appearance: Uniform white suspension without clumps
- Sterility: No growth
- Endotoxins: ≤ 0.5 EU/mL
- ⚠️ Note: Utility focuses on physical characteristics of suspension (particle size, resuspension time) distinguishing premixes from solutions. Incorrect fraction ratio or poor resuspendability are most common causes of therapeutic failure with premixes. Protamine control important for crystal phase stability.
5. URS — user requirements
| ID | Requirement | Criticality | Acceptance criterion |
|---|---|---|---|
| URS-001 | The system shall accept an input.csv file for Insulin Human Premix 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, 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 | INS-MIX-2026-001 | mandatory field; used for batch/lot traceability |
| 2 | Total_Potency_IU_per_ml | decimal | IU/ml | Total Potency IU per ml | 100.0 | mandatory numeric value; rule comparison is performed by the utility |
| 3 | Short_Acting_Percent | decimal | % | Short Acting % | 30.0 | mandatory numeric value; rule comparison is performed by the utility |
| 4 | Intermediate_Acting_Percent | decimal | % | Intermediate Acting % | 70.0 | mandatory numeric value; rule comparison is performed by the utility |
| 5 | pH_Value | decimal | pH | p H Value | 7.2 | mandatory numeric value; rule comparison is performed by the utility |
| 6 | Zinc_Content_mcgPerMl | decimal | as specified | Zinc Content mcg per Ml | 40.0 | numeric value; compared with assay/purity limit from specification or method |
| 7 | Protamine_Content_mcgPerMl | decimal | as specified | Protamine Content mcg per Ml | 450.0 | numeric value; compared with assay/purity limit from specification or method |
| 8 | Proinsulin_Content_ppm | decimal | ppm | Proinsulin Content ppm | 3.0 | numeric value; compared with assay/purity limit from specification or method |
| 9 | Related_Proteins_Percent | decimal | % | Related Proteins % | 0.4 | numeric value; compared with individual or total impurity limit |
| 10 | High_Molecular_Weight_Proteins_Percent | decimal | % | High Molecular Weight Proteins % | 0.1 | mandatory numeric value; rule comparison is performed by the utility |
| 11 | Particle_Size_D50_um | decimal | µm | Particle Size D50 um | 4.5 | mandatory numeric value; rule comparison is performed by the utility |
| 12 | Resuspension_Time_Min | decimal | min | Resuspension Time Min | 1.0 | mandatory numeric value; rule comparison is performed by the utility |
| 13 | SterilityTest | boolean / flag | 0/1 | Sterility Test | 0 | valid flag required; prohibited organisms and growth are normally expected as 0 / absent |
| 14 | Endotoxin_EU_ml | decimal | as specified | Endotoxin EU ml | 0.02 | numeric value; critical safety attribute compared with endotoxin limit |
| 15 | Appearance_After_Resuspension | decimal | as specified | Appearance After Resuspension | 0 | mandatory numeric value; rule comparison is performed by the utility |
CSV example
BatchNumber,Total_Potency_IU_per_ml,Short_Acting_Percent,Intermediate_Acting_Percent,pH_Value,Zinc_Content_mcgPerMl,Protamine_Content_mcgPerMl,Proinsulin_Content_ppm,Related_Proteins_Percent,High_Molecular_Weight_Proteins_Percent,Particle_Size_D50_um,Resuspension_Time_Min,SterilityTest,Endotoxin_EU_ml,Appearance_After_Resuspension INS-MIX-2026-001,100.0,30.0,70.0,7.2,40.0,450.0,3.0,0.4,0.1,4.5,1.0,0,0.02,0
7. FS — functional specification
| ID | Function | Implementation description |
|---|---|---|
| FS-001 | CLI entry point | The executable InsulinHumanPremixQualityChecker.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 Insulin Human Premix, 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": "InsulinHumanPremixQualityChecker",
"api": "Insulin Human Premix",
"batchNumber": "INS-MIX-2026-001",
"overallStatus": "PASS|WARNING|FAIL",
"checkedAtUtc": "2026-05-18T00:00:00Z",
"checks": [
{
"parameter": "BatchNumber",
"value": "INS-MIX-2026-001",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "Total_Potency_IU_per_ml",
"value": "100.0",
"unit": "IU/ml",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "Short_Acting_Percent",
"value": "30.0",
"unit": "%",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "Intermediate_Acting_Percent",
"value": "70.0",
"unit": "%",
"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": "Zinc_Content_mcgPerMl",
"value": "40.0",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "Protamine_Content_mcgPerMl",
"value": "450.0",
"unit": "as specified",
"status": "PASS|WARNING|FAIL",
"message": "Rule-based check result"
},
{
"parameter": "Proinsulin_Content_ppm",
"value": "3.0",
"unit": "ppm",
"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. |
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.
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Open