It's a higher number than I'd routinely like to see, and if the blood test comes back at that level, you may find yourself having another test to confirm a diagnosis.
However, it is also worth noting that the test you did yourself and the test being analysed by the lab are different. The lab one is measuring venous blood, whereas your own finger-prick test work on capillary blood. Undoubtedly, it's all your blood, and drawn at the same time, but the scores are unlikely to be identical. I couldn't speculate which might be the lower, because I don't know, and in any case, the venous blood result will always trump the hand-held meter one.
Good luck with it all, and if it turns out you have crossed the line to full club membership, it's not the end of the world. Many, many people have used their diagnosis to improve their overall health.