--- title: "Analytical Sensitivity, Definition | MedTech Terms" description: "An IVD's ability to detect small quantities of an analyte. 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Both are critical for IVD performance evaluation." } }, { "@type": "Question", "name": "What standards are relevant for determining analytical sensitivity?", "acceptedAnswer": { "@type": "Answer", "text": "The Clinical and Laboratory Standards Institute (CLSI) provides guidance documents, such as CLSI EP17, which outline methods for determining the limit of detection and limit of quantitation." } }, { "@type": "Question", "name": "Is analytical sensitivity a requirement for all medical devices?", "acceptedAnswer": { "@type": "Answer", "text": "Analytical sensitivity is a primary requirement for in vitro diagnostic (IVD) devices, as it directly relates to their ability to detect specific analytes in biological samples. For other types of medical devices, different performance characteristics are evaluated." } } ] } ] } --- [ MedTech Terms The authoritative reference ](/) Browse Learn [Latest](/latest) About 1. [Home](/) 2. / 3. [Terms](/terms) 4. / 5. [Clinical & Trials](/terms?cat=Clinical%20%26%20Trials) 6. / 7. Analytical Sensitivity [All terms](/terms) Clinical & Trials [Clinical Evidence](/ecosystems/clinical-evidence) # Analytical Sensitivity An IVD's ability to detect small quantities of an analyte. Reviewed by [Christian Espinosa, Founder, Blue Goat Cyber](/authors/christian-espinosa) Last reviewed May 5, 2026 ## Definition Analytical sensitivity is the lowest amount of analyte that an assay can reliably detect, often expressed as the limit of detection (LoD) per CLSI EP17. What the regulation says Analytical sensitivity, often referred to as the Limit of Detection (LoD), is a crucial performance characteristic for in vitro diagnostic ( [IVD](/terms/ivd)) devices. Regulatory bodies like the FDA and the EU [MDR](/terms/mdr-reporting) require its thorough characterization to ensure the device can reliably detect the target analyte at low concentrations. This is distinct from clinical sensitivity, which assesses the device's ability to correctly identify individuals with a disease. ## What this means in practice Distinct from clinical (diagnostic) sensitivity. Both must be characterized for [IVD](/terms/ivd) submissions and are central to the [IVDR performance evaluation](/terms/ivdr-performance-evaluation). ## Examples - A manufacturer of an IVD test for a pathogen must determine the analytical sensitivity to ensure the test can detect very low viral loads in patient samples. - During pre-market submission for a new immunoassay, the analytical sensitivity data, including the LoD, is presented to regulatory authorities like the FDA to demonstrate the device's performance claims. - A laboratory developing a new molecular diagnostic assay meticulously follows CLSI guidelines to establish the analytical sensitivity, ensuring reliable detection of nucleic acids. Common pitfalls - • Confusing analytical sensitivity with clinical sensitivity can lead to misinterpretation of a device's performance characteristics. - • Failing to adequately characterize analytical sensitivity per recognized standards, such as those from CLSI, can result in regulatory non-compliance. - • Using inappropriate statistical methods to determine the LoD may lead to inaccurate claims about a device's performance. - • Not considering potential interferences or matrix effects when establishing analytical sensitivity can compromise the reliability of the test results. - • Neglecting to re-evaluate analytical sensitivity after significant manufacturing changes can invalidate previous performance claims. ## Frequently asked questions How does analytical sensitivity differ from clinical sensitivity? Analytical sensitivity refers to the lowest concentration of an analyte an assay can detect, while clinical sensitivity refers to the assay's ability to correctly identify individuals with a specific condition. Both are critical for [IVD](/terms/ivd) performance evaluation. What standards are relevant for determining analytical sensitivity? Is analytical sensitivity a requirement for all medical devices? ## Cross-references ### See also Closely related context worth reading. - [ Limit of Detection / Limit of Quantitation(LoD / LoQ) ](/terms/lod-loq) ## Related terms Grouped by theme ### Editor's picks · Hand-selected related concepts [ Clinical & Trials Limit of Detection / Limit of Quantitation(LoD / LoQ) Lowest analyte concentrations an assay can reliably detect (LoD) or quantify (LoQ). ](/terms/lod-loq)[ Regulatory EU In Vitro Diagnostic Regulation(IVDR) Regulation (EU) 2017/746 governing in vitro diagnostic medical devices in the EU. ](/terms/ivdr) ### More in Clinical & Trials · Same category [ Clinical & Trials Adaptive Trial Design Trial design that pre-specifies opportunities to modify aspects (sample size, arms, endpoints) based on interim data. ](/terms/adaptive-trial)[ Clinical & Trials Adverse Event(AE) Any untoward medical occurrence in a subject, whether or not related to the device. ](/terms/adverse-event)[ Clinical & Trials ALCOA+ Data integrity principles: Attributable, Legible, Contemporaneous, Original, Accurate (plus Complete, Consistent, Enduring, Available). ](/terms/alcoa-plus)[ Clinical & Trials Bayesian Trial Design Trial design that uses Bayesian statistics, often incorporating prior data from related studies or registries. ](/terms/bayesian-trial) Cited by Where this term appears across MedTech Terms. Ecosystems (1) - [Clinical Evidence](/ecosystems/clinical-evidence) ## Primary references 3 sources Link health: 3 verified · last checked 2026-06-20 CLSI· 1 ISO· 1 FDA· 1 1. [1 CLSI EP17 Verified CLSI · clsi.org ](https://clsi.org/standards/products/method-evaluation/documents/ep17/) 2. [2 ISO 14155 Standard Page Verified ISO · iso.org ](https://www.iso.org/standard/71690.html) 3. [3 FDA - Clinical Trials and Human Subject Protection Verified FDA · fda.gov ](https://www.fda.gov/science-research/science-and-research-special-topics/clinical-trials-and-human-subject-protection) Inline markers like \[1\] jump to the matching reference above. Sponsor note ### Clinical evidence intersecting with device security? We support clinical-stage MedTech teams whose investigational devices touch patient data or hospital networks. [Book a 30-minute discovery session](https://go.bluegoatcyber.com/meetings/blue-goat-cyber/discovery-session) - No obligation - Expert-led from minute one - NDA available on request MedTech Terms is a community resource sponsored by [Blue Goat Cyber](https://bluegoatcyber.com). Definitions are independent of any vendor. On this term Category Clinical & Trials Sources 3 Updated 5/5/2026 [Compare with another term](/compare?a=analytical-sensitivity) Learn in 60 seconds Card Lesson Quiz An IVD's ability to detect small quantities of an analyte. - · Distinct from clinical (diagnostic) sensitivity. - · Both must be characterized for IVD submissions and are central to the IVDR performance evaluation. Remember this Watch out: Confusing analytical sensitivity with clinical sensitivity can lead to misinterpretation of a device's performance characteristics. Related terms - [Limit of Detection / Limit of Quantitation(LoD / LoQ) ](/terms/lod-loq) - [EU In Vitro Diagnostic Regulation(IVDR) ](/terms/ivdr) You may also need Auto-suggested from Clinical & Trials and shared keywords. - [Analytical Performance (IVDR) ](/terms/ivdr-analytical-performance) - [Adversarial Robustness ](/terms/adversarial-robustness) - [Bayesian Trial Design ](/terms/bayesian-trial) - [Blinding and Masking ](/terms/blinding) - [Feasibility Study ](/terms/feasibility-study) - [First-in-Human Study(FIH) ](/terms/fih) [All Clinical & Trials terms](/terms?cat=Clinical%20%26%20Trials) From the Blue Goat network Related resources and services on this topic. - [ MedTech Launchpad MedTech funding rounds, accelerators, and launch resources. ](https://medtechlaunchguide.com) MedTech Terms An authoritative, plain-language reference for the regulatory, quality, cybersecurity, and software terms that shape modern medical devices. 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