Sorry if this comes off as cynical, but Youtube is rife with "doctors", or, as in this case, naturopaths, proclaiming that they have single-handedly cracked the Long Covid code, and are offering remedies, typically bundled with significant fees for their acquisition, or, as in this case, for getting sundry tests or bloodwork.
This rather long-winded Anderson fellow is just one amongst many, and I heartily urge caveat empor.
Good for user h2998sc that they've found help from this source, and their voluminous promotion on this forum is noteworthy, but simply ask yourselves whether, if somebody had truly found an effective approach and treatment for LC, it wouldn't have been widely acclaimed and publicized.
It's understandable that people are seeking alternative sources of help since conventional medicine isn't doing too well with this, despite significant resources being expended. But at the same time be sure to rely on your BS detectors, as the gladhanders abound regarding LC, particularly on Youtube where they can self-promote and, incidentally, remove critical comments.
.