Your TSH would be considered moderately high and within recommended diagnose range.
TSH 7.96 is on the hypo side of recommended diagnose range. In other words you are not full blown hypothyroid, yet.
With your TSH in the recommended diagnose range, a "fluke" or error would be irrelevant. If TSH was abnormal then a second test 6 weeks after the first test would be warranted to rule out a "fluke" or error.
People with higher TSH levels are probably more sever hypothyroid and perhaps longer.
Some medicals say AM test thyroid is more active with secretion of thyroid hormones and PM thyroid is less active secreting less thyroid hormones. Other medicals say it doesn't make a difference what time of day test is done - level is a level.
I think all your questions were answered and hope it brought more light to you on the subject.