It’s not unexpected to see some variation between tests, and there are a number of reasons for this. For one, your hormones can naturally fluctuate between cycles and over time.
In general, with lab testing, it's also good to keep in mind that the "reference ranges" between labs can vary, so comparing the values you get back from a lab need to be considered within the range of that particular lab. This is not to say that you can't compare two results from different labs, but rather that there is a range of what's considered "normal" for healthy people and this range can look different between labs.
It can seem a little counterintuitive that you could get one result at one lab and a different result at another and have them both be correct, but it's helpful to remember that blood tests require precise equipment calibrated by each particular lab — and reference ranges are the "common denominator" that helps to make your results actionable by marking the bounds of what's low/normal/high.
For more context about reference ranges and what they mean for your results, check out this article on our blog!
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