I have a fasting blood test first thing on [day] and will be in by [time]; I'll make up the short gap.
Shift work
Leaving a Shift Early for A blood test
Leaving a shift early for a blood test is mostly about cover. Tell your supervisor early and line up someone for the rest of the shift.
Say what you need, briefly
Blood tests are often fasting and early, so you may arrive late rather than leave early. Say which, and confirm your work is covered.
Sort cover for your shift
On a shift, leaving early hinges on cover. Tell your supervisor as early as you can, and where you can, line up a colleague to cover the rest of your shift so the floor isn't left short.
Example messages
I have a lab appointment and need to step out around [time]; I'll be back and priorities are covered.
A quick medical test is booked for [time]; I'll be in a little later than usual.
Mistakes to avoid
Don't leave the floor short without a word. Flag it early and help line up cover for the rest of the shift.
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This page shares wording ideas, not legal or HR advice. Follow your own employer's time-off policy.
Common questions
Come in late or leave early?
For a fasting morning test, arriving a little late is least disruptive.
What matters most on a shift?
Cover. Tell your supervisor early and, where you can, arrange a colleague to cover the rest of your shift.