LDL-C
The optimal range for LDL-C (LDL Cholesterol) is commonly cited as <70 mg/dL in established CVD; <100 in primary prevention, tighter than the standard lab reference range of <100 mg/dL (optimal); <130 (near-optimal); <160 (borderline). The classic cholesterol measure - informative but inferior to ApoB for particle-count-driven risk assessment.
How LDL-C ranges relate
The standard lab range vs the optimization-focused target. Illustrative trajectory shows what a 12-week improvement pattern looks like — not real user data.
What LDL-C Measures
LDL-C measures the total cholesterol content of LDL particles. It's the traditional cardiovascular marker and remains widely used, though the field has shifted toward ApoB as a more accurate measure of atherogenic risk - LDL-C can undercount risk in people with small-dense LDL particles (where cholesterol per particle is lower than average).
For most patients, LDL-C and ApoB tell the same story. Divergence (elevated ApoB with "acceptable" LDL-C) indicates small-dense-LDL pattern and warrants ApoB-primary management. Always pair LDL-C with ApoB when possible.
What Affects This Biomarker
LDL-C is influenced by: dietary saturated fat and cholesterol, genetics (FH, ApoE status), thyroid function, liver function, exercise, body composition, and pharmacologic agents - statins, PCSK9i, bempedoic acid, ezetimibe, GLP-1s.
In the Context of Peptide Protocols
On GLP-1 therapy, expect LDL-C to drop 10–25% at maintenance dose. On growth hormone protocols (tesamorelin, HGH), LDL-C typically doesn't change dramatically - track ApoB instead. Always check LDL-C alongside ApoB, Lp(a), HDL-C, and triglycerides for full lipidology.
Peptides That Commonly Move LDL-C
Related Reading
Conditions That Track LDL-C
Frequently Asked Questions
What does LDL-C measure?
LDL-C measures the total cholesterol content of LDL particles. It's the traditional cardiovascular marker and remains widely used, though the field has shifted toward ApoB as a more accurate measure of atherogenic risk - LDL-C can undercount risk in people with small-dense LDL particles (where cholesterol per particle is lower than average).
What is the optimal range for LDL-C?
The optimal range for LDL-C is commonly cited as <70 mg/dL in established CVD; <100 in primary prevention. The standard lab reference range is <100 mg/dL (optimal); <130 (near-optimal); <160 (borderline).
What affects LDL-C levels?
LDL-C is influenced by: dietary saturated fat and cholesterol, genetics (FH, ApoE status), thyroid function, liver function, exercise, body composition, and pharmacologic agents - statins, PCSK9i, bempedoic acid, ezetimibe, GLP-1s.
Where This Fits in Your Panel
LDL-C is one marker on a fuller panel. The Peptide Blood Work Checklist lays out the complete baseline panel, what to add by protocol type, and when to retest.
See the full blood work checklist →Upload any lab PDF and MyProtocolStack maps your values to LDL-C and 40+ other biomarkers. StackAI interprets the trend in context of your protocol.
Start tracking →Last reviewed: June 2026
Informational only - not medical advice. Reference ranges vary by lab and individual context. Work with a licensed provider to interpret your specific results.