In healthcare facilities, ensuring that reusable medical devices are thoroughly cleaned before disinfection or sterilization is critical for patient safety. One of the most effective methods for verifying cleaning effectiveness is ATP検査.
ATP (Adenosine Triphosphate) testing provides rapid and objective evidence of residual organic contamination on medical devices and surfaces. By measuring ATP levels, healthcare professionals can assess whether cleaning procedures have successfully removed biological residues such as blood, 組織, バクテリア, およびその他の有機物.
This article explains the ATP test procedure, its importance, required materials, step-by-step testing instructions, and how ATP swab products can improve cleaning verification programs.
ATP, or Adenosine Triphosphate, is the universal energy molecule found in all living cells, 含む:
When ATP comes into contact with a special bioluminescent reagent, a light reaction occurs. The amount of light produced is directly proportional to the amount of ATP present in the sample.
An ATP monitoring system measures this light and reports the result in Relative Light Units (RLUs). Lower RLU values indicate cleaner surfaces, while higher values suggest residual contamination remains after cleaning.
Before performing ATP testing, prepare the following:
For narrow internal channels such as endoscopes, specialized ATP sampling swabs are recommended.
Always wear sterile gloves and follow aseptic techniques throughout the sampling process.
Proper handling helps prevent contamination that could affect ATP test results.
Insert the ATP sampling swab into the channel or area being tested.
For endoscope channels:
The sampling process should be performed immediately after cleaning and before high-level disinfection or sterilization whenever possible.
Place the collected sample into the ATP test device according to the manufacturer’s instructions.
If a detachable sampling tip is used:
Activate the ATP test device by releasing the reagent contained within the test tube.
通常:
The reagent reacts with ATP present on the swab tip.
Shake the ATP test device vigorously for approximately 10 秒.
This ensures complete contact between the sample and the reagent, producing a reliable bioluminescent reaction.
Insert the activated ATP test device into the luminometer.
The instrument will measure the light emitted from the reaction and calculate an RLU value.
Most ATP systems provide results within 10–15 seconds.
The RLU value indicates the cleanliness level of the tested area.
General interpretation guidelines:
| 結果 | Interpretation | Recommended Action |
|---|---|---|
| Low RLU | 掃除 | No action required |
| Moderate RLU | 警告 | Re-test or investigate |
| High RLU | Fail | Re-clean and retest |
Each ATP monitoring system may have specific pass/fail thresholds established by validation studies or facility protocols.
For ATP cleanliness verification of endoscopes and cannulated medical devices, MEIDIKE GENE ATP Swab is specifically designed to collect samples from hard-to-reach internal channels.
✔ Improves sampling efficiency in narrow channels
✔ Helps obtain more representative ATP samples
✔ Supports cleaning validation protocols
✔ Reduces the risk of false-negative results caused by inadequate sample collection
