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OpenSampling

2026 · Fertility and sterility · paywalled

Home pregnancy test sensitivity by test timing and cycle length with real-world use among pregnancy planners who conceived

Sundermann et al.

The finding, in our words

In a large real-world cohort of pregnancy planners using home urine tests, sensitivity was lower than expected before the expected period, with false negatives of 12.7% at 2 days, 21.4% at 3 days and 46.4% at 4 days before menses; sensitivity rose sharply thereafter to over 99% by 4 days after the expected period, and for any given test day, longer menstrual cycles were associated with higher sensitivity, especially among early testers.

A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.

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  1. 2025

    The Mira fertility monitor's LH surge and urine E1-3G levels correlated strongly with the ClearBlue Fertility Monitor's LH surge and low-to-high shift in both postpartum and perimenopause transitions, supporting at-home urine hormone monitoring for fertility tracking.

    Validating At-Home Urinary Hormone Measurements in Postpartum and Perimenopause Fertility TransitionsBouchard et al., Women's health reports · source ↗

    • urine
    • self-collection
    • validation
    • fertility
    • hormones
  2. 2025

    All five at-home urine ovulation predictor kits demonstrated high accuracy (92–97%) when compared with blood LH levels, though sensitivity varied widely from 38% to 77% with Clinical Guard the lowest. Patient experience was comparable across kits, though Clinical Guard was slightly less favoured for future use.

    Similar accuracy and patient experience with different one-step ovulation predictor kitsVanderhoff et al., Fertility and sterility (paywalled) · source ↗

    • blood
    • urine
    • self-collection
    • validation
    • venous-agreement
    • acceptability
    • fertility
    • hormones
  3. 2024

    This retrospective case series found that a protocol combining home-based urinary hormone testing with a smartphone application supported fertility management and family planning without unintended pregnancies. The findings suggest that integrating self-collected urinary data with digital tools offers a viable decentralised approach for ovulation prediction.

    Helping Patients to Predict and Confirm Ovulation with the Use of Combined Urinary Hormonal and Smartphone Technology: A Proof-of-Concept Retrospective Descriptive Case SeriesLeiva & Ecochard, Seminars in reproductive medicine · source ↗

    • multimodal
    • self-collection
    • fertility
    • hormones
    • urine
  4. 2024

    In subfertile women, urinary microbiota profiles correlated strongly with vaginal profiles but contained fewer species, indicating that vaginal sampling is preferable for predicting fertility treatment outcomes.

    Clinical Applicability of Microbiota Sampling in a Subfertile Population: Urine versus VaginaKoedooder et al., Microorganisms · source ↗

    • urine
    • self-collection
    • fertility
    • microbiome
  5. 2023

    Quantitative at-home urine monitors clearly demarcated luteal phase transitions, luteinisation, progestation, and luteolysis, and identified anovulation across three clinical scenarios. This proof-of-concept suggests self-collected urine hormone measurements could help women target fertility interventions without clinic visits.

    Using Quantitative Hormonal Fertility Monitors to Evaluate the Luteal Phase: Proof of Concept Case StudyBouchard, Medicina · source ↗

    • urine
    • self-collection
    • fertility
    • hormones