JenPlateau said:

International shipping tracking for cross-border ordering orders: my experience with customs in the US when ordering from overseas: Held at customs…

Agreed, and the size of the effect matters as much as its existence. Something real and small gets treated here as though it were real and decisive.

Worth separating that from glycaemic control, which this thread keeps folding into the same question. They behave differently and the advice does not transfer.

roxy_nash said:

Agreed, with the caveat that HbA1c is unreliable in anaemia, haemoglobinopathies and recent blood loss, all of which are commoner than people assume.

This is exactly what I could not find anywhere else. Printing the relevant bit and taking it with me.

JenPlateau said:

International shipping tracking for cross-border ordering orders: my experience with customs in the US when ordering from overseas: Held at customs…

Filing a mild objection. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit. The counter-case has not been addressed. Somebody upthread described the situation that does not fit, and the thread moved on rather than engaging with it, which is the failure mode this board is supposed to avoid.

Adding the numbers, since they settle part of this. Keep the original post as written when you update it, and add the correction underneath. An edited-away mistake is invisible to the next person who makes it.

Moderator note: good thread. Keeping it here rather than moving it, because the question is general enough to be useful.