This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.
Narrowing post #120, because the general version has more than one answer.
A note on how bring a laboratory gets discussed rather than on bring a laboratory itself: the confident posts get the replies and the careful ones get ignored, and the careful ones have been right more often.
Everything in post #118 holds. The case it does not cover is the one I have.
Worth stating the null on bring a laboratory before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does not get one.
A trend needs at least three points to be a trend. Two points are a line and a line through noise is still a line.
Small point, but it is the one that usually catches people.
Post #124 answers the question as asked. The question underneath it is different.
Checked the bring a laboratory claim against the primary source this morning. It survives, with a narrower scope than the version quoted here. Posting the narrower scope.
The honest answer on bring a laboratory is that it depends, and the useful part is the list of what it depends on. Four items, in rough order of how much they matter.
Most people get the first two right and then argue about the fourth.
Understood, and I withdraw the assumption I opened with.
Glycaemic markers integrate over different periods. A point glucose and a longer-term marker disagreeing is not a contradiction; it is two different questions.
On reflection I would soften that slightly.
Counterpoint on bring a laboratory, offered without confidence: the same observation is consistent with a much duller explanation, and nobody has ruled the dull one out.
Answering the bring a laboratory question as asked, then the question I think is meant. As asked: yes, with the qualification below. As meant: it depends on how the first measurement was taken.
Time of day: some biomarkers vary across the day. Cortisol in the morning differs from cortisol in the evening. Comparing results from different times of day is comparing things that are not the same.
One of those cases where knowing the mechanism does not help the decision.
Post #133 answers the question as asked. The question underneath it is different.
Glycaemic markers integrate over different periods. A point glucose and a longer-term marker disagreeing is not a contradiction; it is two different questions.
I would treat that as a working assumption and revisit it.
Post #133 and I disagree about the size of the effect, not about the direction.
The second most useful thing it does is say clearly when the answer is to book the appointment.
If anyone has run this properly I would rather read that than my own guess.
Worth separating bring a laboratory as a question about the compound from bring a laboratory as a question about the documentation. They get answered by different people and only one of them is answerable here.
Small correction to my own earlier position on bring a laboratory. I had the units the wrong way round, which changes the conclusion by an order of magnitude and therefore changes it entirely.
A trend needs at least three points to be a trend. Two points are a line and a line through noise is still a line.
Building on post #137 rather than restating it.
I keep a log for bring a laboratory specifically because my memory of it turned out to be systematically wrong in one direction. Six weeks of notes cost nothing and settled it.
The most useful thing anyone has posted about bring a laboratory in this category was a table of what had been measured and by whom. That is what I would want again.
Glycaemic markers integrate over different periods. A point glucose and a longer-term marker disagreeing is not a contradiction; it is two different questions.
Post #142 is the version of this I will quote in future. One addition.
Bringing the actual numbers with intervals to an appointment is far more useful than describing them, and clinicians here consistently say so.
One case, stated as one case.
Where I part company with post #140, and it is a narrow parting.
Time of day: some biomarkers vary across the day. Cortisol in the morning differs from cortisol in the evening. Comparing results from different times of day is comparing things that are not the same.
Stating my assumptions rather than smuggling them in.
Narrowing post #142, because the general version has more than one answer.
A trend needs at least three points to be a trend. Two points are a line and a line through noise is still a line.
Worth saying I have only my own numbers here, and n is small.
Where the bring a laboratory reasoning breaks down for me is the step from the group result to the individual case. That step is almost never argued for.
Acknowledging rather than arguing. The reasoning holds as far as I can follow it.
Picking up post #146: that is the part I would want checked first.
Repeat before acting is standard practice for an isolated abnormal result on most analytes, and it is standard for a reason.
For what it is worth, the same held on the two occasions I checked.
On post #149 — agreed on the reasoning, with one qualification.
Glycaemic markers integrate over different periods. A point glucose and a longer-term marker disagreeing is not a contradiction; it is two different questions.
That is my reading. Someone else read the same page differently and was reasonable.