CJC-1295 with DAC is the long-acting variant of CJC-1295 — the Drug Affinity Complex (DAC) is a maleimidopropionic acid linker that covalently binds to circulating serum albumin, extending half-life from minutes to days. The published clinical data is limited but solid: Teichman et al. 2006 documented prolonged GH and IGF-1 elevation for 6+ days after a single dose.
Research-context information only. CJC-1295 with DAC is a research peptide on the FDA 503A bulks Category 2 list. Protocols, doses, and reactions reported below come from published research and self-reported community sources. This article reports what has been documented, not what should be done. Consult a licensed physician for personal medical decisions.
The buying problem is that "CJC-1295" frequently means CJC-1295 no-DAC (Mod GRF 1-29) in research-vendor catalogs, but CJC-1295 with DAC is structurally and pharmacokinetically different. Mass spec at 3,649 Da (vs 3,367 Da for no-DAC) is the verification target.
This guide covers documented per-mg pricing, COA verification, vial size selection, and red flags. For dosing context, see the CJC-1295 with DAC dosing guide.
This is not a ranked vendor list — for that, see our Best CJC-1295 with DAC Vendors comparison.
Understanding CJC-1295 with DAC Pricing
Current Market Pricing (2026)
2mg
$25-50
$12.50-25/mg
Tolerance testing only
5mg
$40-90
$8-18/mg
Standard 1mg/week — best all-around
10mg
$70-150
$7-15/mg
Higher doses, longer cycles
10mg × 5 (kit)
$300-650
$6-13/mg
Extended cycles
The pattern: Per-mg pricing is higher than no-DAC CJC-1295 ($5-9/mg) because the DAC linker adds synthesis cost and the with-DAC variant has lower vendor competition.
Cost Per Month at Common Doses
1mg/week
4mg
$32-72
$28-60
2mg/week
8mg
$64-144
$56-120
2mg twice weekly
16mg
$128-288
$112-240
For current vendor-specific pricing, see our Best CJC-1295 with DAC Vendors comparison.
Cheapest single-vial option: Glacier Aminos's 10% off drops the 5mg vial to $44.99 ($9.00/mg effective) — the lowest effective price we track for buying one vial. Get the code →
How to Verify CJC-1295 with DAC Quality
What a COA Should Include
Identity Confirmation
Mass spec confirming 3,649 Da for CJC-1295 with DAC (vs 3,367 Da for no-DAC)
Sequence verification — 30-residue GHRH analog with maleimidopropionic acid linker at Lys30
DAC linker explicitly verified
Purity Testing
HPLC purity at 98%+
Single dominant peak
Water content (Karl Fischer) under 8%
Contamination Testing
Endotoxin levels
Residual solvent analysis
Heavy metals screening
How to Verify a COA Is Legitimate
Third-party lab — Janoshik, MZ Biolabs, Colmaric most-cited
Verifiable task number
Recent date (within 6 months)
Batch match
3,649 Da mass confirmation — 3,367 Da indicates no-DAC variant
Red Flags to Avoid
No COA available
Only in-house testing
Prices similar to no-DAC ($5-9/mg) — DAC variant should be ~30-60% more expensive
No mass spec
Vague "CJC-1295" labeling without specifying DAC vs no-DAC
Mass spec showing 3,367 Da — that's no-DAC, not with-DAC