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  • Society for Endocrinology - a world-leading authority on hormones

    The pulsatile nature and rhythmic pattern of hormone secretion can have important implications for the measurement of circulating hormone levels.

    As many hospitals in the UK migrate to electronic patient records and ordering systems, it is all too easy to click on pre-ordered pathology panels, and not pause to consider what is actually being requested.

    Pathology tests taken at the wrong time of day waste resources, cause inconvenience and can provoke anxiety for health professionals and patients alike when trying to interpret unhelpful results.

    Having an understanding of the pattern of pituitary hormone secretion will guide us in determining the optimal time to order these investigations.

    Here, I summarise issues relating to some common endocrine blood tests, to serve as a reminder to ‘think before we click’ when ordering tests.

    GROWTH HORMONE

    Generally, ordering a random growth hormone (GH) level is unhelpful; the results will be difficult to interpret.

    Frequent blood-sampling techniques have demonstrated the

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