l carnitine amount to take NaturaLife Labs Acetyl L-Carnitine (ALCAR) 1500 mg per Serving – 100 Capsules – Non-GMO, Gluten-Free, Vegan : Health & Household Beneficial effects of l-carnitine supplementation
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This info on dosages appears to come directly from Examine.coms Rhodiola page, which Layne credits at the bottom of the Instagram post

Baxter M, Ray DW

By contrast, our design equated both volume and intensity of the different load conditions allowing for the acute effects of load to be carefully disseminated in the context of AR signaling and potential implications in skeletal muscle hypertrophy

Examples of accreditation markers to look for: ISO/IEC 17025 accreditation on the testing laboratory letterhead
Anna-Maria Boie, general manager of Boehringer Ingelheim Korea, said the company would work to secure reimbursement coverage so more patients could access timely and affordable treatment following the recent recognition of the drug's eligibility for reimbursement
