I plan to get my microbiome tested at some point, so this page is just the notes I've been jotting down on the companies available to do the testing. From the looks of them so far, I'll probably go with uBiome (seems like the most popular, and isn't complicated by offering "gut customized" products) or American Gut (as an open, academic project).

Please leave a comment if there's any notes I should add.

American Gut

• $99 per test
• Results may take up to 3 months (from the FAQ)
• 16S sequencing, comprehensively described. There's also "shallow shotgun", "deeper shotgun", virus / microbial eukaryotes / fungi options, but they're very expensive ($1500+).
• raw data accessible, but probably less "user-friendly" interpretation than the others.
• There's also a British Gut option

Biohm Gut Report

• $180 per test (with lower prices for subscriptions)
• 16S bacterial sequencing, ITS fungal sequencing

DayTwo

• $299 per test
• Results in around 6 weeks
• Uses metagenomic "shotgun sequencing" that's probably superior to the other 16S type of tests
• Article describing the results

MapMyGut

• Currently only available through a medical professional
• Results in 6-8 weeks
• 16S sequencing

Microba

• $349 (Australian) per test
• Currently Australia-only, but you can sign up to be notified when they service other countries
• Results in 4-6 weeks
• Metagenomic sequencing (probably superior to the usual 16S sequencing)

Thryve

• The cost has recently risen to $150 per test unless you use their "Subscribe & Save" to cut the cost to $105.
• Results in 2-3 weeks
• Sample report
• Comparison of someone's results between Thryve and uBiome
• 16s sequencing

uBiome

• Multiple test types available:
  • Basic testing: $89 per test (or $199 for 3)
  • ExplorerPlus (combination of metagenomic and marker-based sequencing): $399 for four tests
  • May be able to get "free" testing through their SmartGut pilot program that bills your insurance, with any remaining balance paid by uBiome. It sounds like it's less comprehensive than the standard $89 Explorer test though, see the comment below.
• Reportedly: "it takes roughly 8 weeks to get results, even longer with smart gut."
• "The smart gut report shows if a genus is high, low, or normal. These limits are defined as 0.5% and 99.5%-tiles respectively (the middle 99% are normal)." (source)
• Also has vaginal and 5-site (gut, mouth, nose, genitals and skin) microbiome testing

OME (UK service, formerly vDNA / VitalityDNA)

• £245.00 per test (but also includes a DNA test, blood test, and a fitness tracker)
• Results in 4-6 weeks

Viome

• $399 per year (one test kit which also includes "metabolic" testing). Additional (gut-only) tests are $199.
• Reportedly "a few weeks" turnaround time
• "Metatranscriptome" testing that they believe is superior to others' 16S testing because of its ability to identify all bacteria, and to identify viruses, archaea, yeast, fungi, parasites, and bacteriophages.
• No access to raw data (see see CEO tweet here)

---