Guides
Citation-backed, in-depth educational content on the topics VitaLog is built around, written to be the best free reference on the internet for each topic.
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Available now
TRT Bloodwork Monitoring, Complete Guide
Full panel (20 tests, reference ranges), draw timing (trough vs peak), Vermeulen free-T math, hematocrit safety thresholds, AST/ALT interpretation, red flags, and draw frequency. ~5,000 words with PubMed citations.
How to Reconstitute BPC-157
Step-by-step procedure, bacteriostatic-water math, storage, subcutaneous-injection technique, and a ready-reference dose chart in mL and U-100 insulin-syringe IU.
Pharmacokinetics Explained
Plain-English reference for Cmax, Tmax, half-life, AUC, steady state, Bateman equation, one- vs two-compartment models, and variability envelopes. Five worked examples.
Zero-Knowledge Encryption Explained
How VitaLog actually protects your progress photos, AES-256-GCM, PBKDF2-wrapped keys, chunk-based upload, and why we can't decrypt even under legal subpoena.
Bloodwork glossary
Plain-English definitions of the most-searched bloodwork markers with reference ranges, what high and low mean, and when to test. See the full glossary index for all entries.
SHBG
Sex hormone-binding globulin, determines how much testosterone is free vs bound. 10-60 nmol/L adult men.
Total Testosterone
The headline number on any TRT panel. 300-1000 ng/dL adult men; age-indexed table inside.
Free Testosterone
The bioactive fraction. 9-30 ng/dL Vermeulen-calculated. Three measurement methods compared.
Estradiol (E2)
Primary estrogen. Sensitive-assay 10-40 pg/mL adult men; why immunoassay overestimates.
Hematocrit (HCT)
Red-cell blood-volume percentage. 40-54% adult men. 54% TRT safety threshold.
Coming soon
- How to reconstitute TB-500, CJC-1295, ipamorelin, sermorelin, MK-677 (template series)
- Bioavailable testosterone, cortisol, free T4 + free T3, PSA, ferritin, additional glossary entries
- Injection technique & site-rotation best practices
- How to interpret a complete metabolic panel (CMP)
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