Does LDL-C tell me anything about hepatic fat on cagrilintide?

Stated plainly: LDL-C · cagrilintide.

I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me suspicious.

My background is quantitative but not chemical, so I can follow an equation more easily than a hand-wave.

Is the standard explanation correct, and if so, what is the evidence for it?

Answering this needs the magnitude in multiples of the upper reference limit, because the thresholds that matter clinically are defined that way and not in absolute units.

Gamma-glutamyl transferase is sensitive and unspecific: it rises with alcohol, with several medications and with fatty liver, and an isolated elevation rarely changes anything on its own.

Stated carefully, weight loss of ten per cent or more typically reduces transaminases substantially in people whose elevation was driven by hepatic fat, which is the majority of mild elevations in this population.

Transaminases plus bilirubin plus alkaline phosphatase, or you have not measured enough to conclude anything.

More usefully, this is one of the areas where the trend across several measurements is far more informative than any single result.

Creatine kinase, alkaline phosphatase and bilirubin together tell you which compartment the abnormality is in, and ordering the transaminases alone throws that information away.

Put another way, an isolated result three weeks after starting anything is difficult to interpret. A baseline taken before starting makes the same result trivially interpretable, which is the argument for baselines.

Laboratory-specific reference intervals for transaminases vary enough that cross-laboratory comparison of borderline values is unreliable.

New training, alcohol and over-the-counter products first. Then the interesting hypotheses.

edited 27 Dec 2025 by Dr_Idris_Coulibaly — fixed an arithmetic slip in the third paragraph

The relevant caution is that a rapid rise, particularly with bilirubin, is a different event from a stable mild elevation and needs handling differently.

Alanine aminotransferase is relatively liver-specific; aspartate aminotransferase is also present in muscle, heart and red cells. A raised AST with a normal ALT after heavy resistance training is usually muscle, and creatine kinase settles the question.

The caveat is direct: rising liver enzymes with jaundice, dark urine or right-upper-quadrant pain is a same-day clinical problem, not a forum question.

Get a baseline before you start anything, because it converts an uninterpretable result into an interpretable one for the cost of one blood draw.

edited 26 Jan 2026 by fib4_reader — added the placebo-arm figures

Start with the pattern. A hepatocellular pattern with alanine aminotransferase above aspartate aminotransferase points one way; a cholestatic pattern with alkaline phosphatase and gamma-glutamyl transferase points another.

Reference upper limits around forty units per litre for ALT are conventional rather than physiological; several groups have argued for limits closer to thirty for men and twenty-five for women.

Read the pattern before the magnitude, and the magnitude in multiples of the upper limit.

edited 10 Feb 2026 by lipid_panel_q — updated for the 2026 guidance change