Fluorine18NaFQualityChecker

Fluorine18 Na F

decay correction endotoxins heavy metals impurities microbiology PET radionuclide purity radiopharma

Fluorine-18 NaF Quality Checker — Sodium [18F]fluoride for bone PET imaging (Ph. Eur. 2483, USP <823>)

ℹ️  The utility checks radiochemical purity (as [18F]fluoride), radionuclidic purity (F-18), aluminium, pH, endotoxins, sterility, heavy metals, residual ethanol.
ℹ️  Does not use machine learning — rule-based logic only.
⚠️  CRITICAL: Aluminium <10 ppm — CRITICAL for image quality! Concentrations ≥10 ppm cause bone uptake artifacts on PET! Radionuclidic purity ≥99.5% — minimizes radiation burden!

Usage:
  Fluorine18NaFQualityChecker.exe                            → demo mode (console output)
  Fluorine18NaFQualityChecker.exe input.csv output.json      → evaluate your data

Input format:
BatchNumber,RadiochemicalPurityPercent,RadionuclidicPurityPercent,AluminiumPPM,pH,EndotoxinsEU,SterilityTest,HeavyMetalsPPM,ResidualEthanolPPM

Example (sterility: 0=sterile, 1=contaminated):
F18-NaF-2026-001,98.5,99.8,5.0,6.8,100.0,0,5,2000

— WHY IS THIS NEEDED?
Sodium [18F]fluoride — highly sensitive PET radiopharmaceutical for bone metastasis imaging:
• 2-4x more sensitive than technetium-99m bone scintigraphy
• Used for metastasis detection in prostate, breast, lung cancer
• Rapid bone uptake (10x higher than in soft tissues)
⚠️ CRITICAL:
• Radiochemical purity ≥95% (as [18F]fluoride) — ensures fluoride delivery specifically to bone tissue, not other organs
• Radionuclidic purity ≥99.5% (F-18) — minimizes radiation burden from impurities (e.g., F-17, O-15)
• Aluminium <10 ppm — CRITICAL! Aluminium forms complexes with fluoride, causing FALSE BONE UPTAKE on PET images. This leads to false-positive results and diagnostic errors!
• pH 4.5–8.5 — critical for blood compatibility during intravenous administration
• Endotoxins ≤175 EU/vial — critical for intravenous administration! Exceeding causes pyrogenic reactions
• Sterility — MANDATORY for all parenteral forms! Contamination = unfit for use
⚠️ Special attention: Aluminium is the MOST CRITICAL PARAMETER for NaF! Even 10.1 ppm can cause image artifacts. Control performed by atomic emission spectroscopy (ICP-OES) or colorimetry. Radionuclidic purity checked by gamma spectrometry (511 keV peak). Radiochemical purity — TLC method (mobile phase: acetonitrile/water). Endotoxins — LAL method. Sterility — membrane filtration method (USP <71>).
Critical parameters:
• Radiochemical purity: ≥95.0% (as [18F]fluoride)
• Radionuclidic purity: ≥99.5% (F-18)
• Aluminium: <10 ppm (CRITICAL FOR IMAGE QUALITY!)
• pH: 4.5–8.5 (blood compatibility)
• Endotoxins: ≤175 EU/vial (LAL test)
• Sterility: no microbial growth
• Heavy metals: ≤10 ppm
• Residual ethanol: ≤5000 ppm
⚠️ Note: Utility is designed for quality control of FINISHED INJECTABLE SOLUTION. All parameters comply with parenteral form requirements for bone PET imaging. Due to short half-life (110 min), quality control must be completed within 20–30 minutes after synthesis. Utility speeds up result processing 5-10x. Aluminium is checked FIRST — it's the key parameter for clinical usability.

input.csv

BatchNumber,RadiochemicalPurityPercent,RadionuclidicPurityPercent,AluminiumPPM,pH,EndotoxinsEU,SterilityTest,HeavyMetalsPPM,ResidualEthanolPPM
F18-NaF-2026-001,98.5,99.8,5.0,6.8,100.0,0,5,2000

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: Fluorine18NaFQualityCheckerAPI / object: Fluorine18 Na FCategory: Radiopharmaceuticals

1. Scope

The Fluorine18 Na F Quality Checker utility is used for Fluorine18 Na F. 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: Radiopharmaceuticals

Tags: decay correction, endotoxins, heavy metals, impurities, microbiology, PET, radionuclide purity, radiopharma, SPECT, sterility, water quality

2. Execution modes

Fluorine18NaFQualityChecker.exe                            → demo mode (console output)
Fluorine18NaFQualityChecker.exe input.csv output.json      → evaluate your data

3. Key controlled areas

purity and impurities
residual solvents
microbiology and pathogens
heavy metals / elemental impurities
pH and physicochemical parameters
activity, decay and radiochemical purity

4. Domain limits and critical parameters

⚠️ CRITICAL: Aluminium <10 ppm — CRITICAL for image quality! Concentrations ≥10 ppm cause bone uptake artifacts on PET! Radionuclidic purity ≥99.5% — minimizes radiation burden!
⚠️ CRITICAL:
Radiochemical purity ≥95% (as [18F]fluoride) — ensures fluoride delivery specifically to bone tissue, not other organs
Radionuclidic purity ≥99.5% (F-18) — minimizes radiation burden from impurities (e.g., F-17, O-15)
Aluminium <10 ppm — CRITICAL! Aluminium forms complexes with fluoride, causing FALSE BONE UPTAKE on PET images. This leads to false-positive results and diagnostic errors!
pH 4.5–8.5 — critical for blood compatibility during intravenous administration
Endotoxins ≤175 EU/vial — critical for intravenous administration! Exceeding causes pyrogenic reactions
Sterility — MANDATORY for all parenteral forms! Contamination = unfit for use
⚠️ Special attention: Aluminium is the MOST CRITICAL PARAMETER for NaF! Even 10.1 ppm can cause image artifacts. Control performed by atomic emission spectroscopy (ICP-OES) or colorimetry. Radionuclidic purity checked by gamma spectrometry (511 keV peak). Radiochemical purity — TLC method (mobile phase: acetonitrile/water). Endotoxins — LAL method. Sterility — membrane filtration method (USP <71>).
Critical parameters:
Radiochemical purity: ≥95.0% (as [18F]fluoride)
Radionuclidic purity: ≥99.5% (F-18)
Aluminium: <10 ppm (CRITICAL FOR IMAGE QUALITY!)
pH: 4.5–8.5 (blood compatibility)
Endotoxins: ≤175 EU/vial (LAL test)
Sterility: no microbial growth
Heavy metals: ≤10 ppm
Residual ethanol: ≤5000 ppm
⚠️ Note: Utility is designed for quality control of FINISHED INJECTABLE SOLUTION. All parameters comply with parenteral form requirements for bone PET imaging. Due to short half-life (110 min), quality control must be completed within 20–30 minutes after synthesis. Utility speeds up result processing 5-10x. Aluminium is checked FIRST — it's the key parameter for clinical usability.

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 Fluorine18 Na F 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: purity and impurities, residual solvents, microbiology and pathogens, heavy metals / elemental impurities, pH and physicochemical parameters, activity, decay and radiochemical purity.	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	`F18-NaF-2026-001`	mandatory field; used for batch/lot traceability
2	`RadiochemicalPurityPercent`	decimal	%	Radiochemical Purity %	`98.5`	numeric value; compared with assay/purity limit from specification or method
3	`RadionuclidicPurityPercent`	decimal	%	Radionuclidic Purity %	`99.8`	numeric value; compared with assay/purity limit from specification or method
4	`AluminiumPPM`	decimal	ppm	Aluminium PPM	`5.0`	mandatory numeric value; rule comparison is performed by the utility
5	`pH`	decimal	pH	p H	`6.8`	mandatory numeric value; rule comparison is performed by the utility
6	`EndotoxinsEU`	decimal	as specified	Endotoxins EU	`100.0`	numeric value; critical safety attribute compared with endotoxin limit
7	`SterilityTest`	boolean / flag	0/1	Sterility Test	`0`	valid flag required; prohibited organisms and growth are normally expected as 0 / absent
8	`HeavyMetalsPPM`	decimal	ppm	Heavy Metals PPM	`5`	numeric value; checked as elemental/metal impurity
9	`ResidualEthanolPPM`	decimal	ppm	Residual Ethanol PPM	`2000`	numeric value; checked as residual solvent against the applicable limit

CSV example

BatchNumber,RadiochemicalPurityPercent,RadionuclidicPurityPercent,AluminiumPPM,pH,EndotoxinsEU,SterilityTest,HeavyMetalsPPM,ResidualEthanolPPM
F18-NaF-2026-001,98.5,99.8,5.0,6.8,100.0,0,5,2000

7. FS — functional specification

ID	Function	Implementation description
FS-001	CLI entry point	The executable `Fluorine18NaFQualityChecker.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 Fluorine18 Na F, 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": "Fluorine18NaFQualityChecker",
  "api": "Fluorine18 Na F",
  "batchNumber": "F18-NaF-2026-001",
  "overallStatus": "PASS|WARNING|FAIL",
  "checkedAtUtc": "2026-05-18T00:00:00Z",
  "checks": [
    {
      "parameter": "BatchNumber",
      "value": "F18-NaF-2026-001",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "RadiochemicalPurityPercent",
      "value": "98.5",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "RadionuclidicPurityPercent",
      "value": "99.8",
      "unit": "%",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "AluminiumPPM",
      "value": "5.0",
      "unit": "ppm",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "pH",
      "value": "6.8",
      "unit": "pH",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "EndotoxinsEU",
      "value": "100.0",
      "unit": "as specified",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "SterilityTest",
      "value": "0",
      "unit": "0/1",
      "status": "PASS|WARNING|FAIL",
      "message": "Rule-based check result"
    },
    {
      "parameter": "HeavyMetalsPPM",
      "value": "5",
      "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.
TC-007	Residual solvent above applicable limit	FAIL is produced with solvent name and measured value.
TC-008	Incorrect activity, reference time or radiochemical purity	FAIL/WARNING is produced with calculation traceability.

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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Fluorine18NaFQualityChecker

input.csv

1. Scope

2. Execution modes

3. Key controlled areas

4. Domain limits and critical parameters

5. URS — user requirements

6. input.csv data contract

CSV example

7. FS — functional specification

8. output.json contract

9. OQ/PQ test scenarios

10. QA/QC, CSV and change control

Included in packages

Andrology QC Suite

PetRad QC Suite

Radiology QC Suite

RPH isotope family: short-lived PET isotopes

RPH organ/system: bone and musculoskeletal

RPH organ/system: hepatobiliary and GI

RPH organ/system: oncology and theranostics

RPH organ/system: pulmonary and ventilation

RPH use case: PET/SPECT oncology diagnostics and receptor imaging

RPH workflow: generators and isotope purity

RPH workflow: imaging QC and quantitative interpretation

RPH workflow: product release QC

RPH workflow: stability, storage, decay and waste

RPH workflow: synthesis, labelling and kit reconstitution

RPH: combined radiopharmaceutical QC package

Urology QC Suite