CJC-1295 DAC vs No DAC: Half-Life, Price Per Mg, and Buyer Checks

Short Answer: DAC Changes the Molecule, Duration, and Buy

CJC-1295 with DAC is the long-acting, albumin-binding form. The product commonly sold as CJC-1295 without DAC is more precisely called Modified GRF 1-29, or Mod GRF 1-29. They share a peptide lineage, but they are not interchangeable products.

The practical difference is duration. The primary human pharmacokinetic study estimated a 5.8 to 8.1 day half-life for CJC-1295 with DAC. The local guide and cited FDA presentation describe no-DAC as clearing in roughly 30 minutes, or under one hour.

Choose the intended research format first. Then compare only vials with the same exact identity, quantity, lot evidence, and delivered price. A label that says only CJC-1295 does not establish whether DAC is present.

Start with the CJC-1295 compound guide, then use CJC-1295 prices to compare current listings after confirming the variant.

CJC-1295 DAC vs No DAC Comparison

Do not assume a product labeled only CJC-1295 contains DAC. Exact chemical identity is the first buyer check, not a detail to resolve after checkout.

What the Human Studies Actually Measured

Teichman and colleagues ran two randomized, placebo-controlled, double-blind ascending-dose trials lasting 28 and 49 days. Participants were healthy adults ages 21 to 61.

After one CJC-1295 with DAC injection, mean growth hormone rose 2- to 10-fold for at least 6 days. Mean IGF-1 rose 1.5- to 3-fold for 9 to 11 days. The estimated half-life was 5.8 to 8.1 days. After multiple doses, mean IGF-1 remained above baseline for up to 28 days. The study reported no serious adverse reactions.

Those are unusually useful duration data for a peptide buyer because they confirm that DAC materially changes exposure. They do not establish body-composition or performance outcomes.

A second study sampled healthy men ages 20 to 40 every 20 minutes overnight, before and one week after 60 or 90 micrograms per kilogram of CJC-1295 with DAC. Growth-hormone pulse frequency and magnitude were preserved. Basal GH rose 7.5-fold with P under 0.0001, mean GH rose 46 percent with P under 0.01, and IGF-1 rose 45 percent with P under 0.001.

The evidence boundary matters. These studies measured hormones, pharmacokinetics, and short-term tolerability. They did not test fat loss, muscle gain, recovery, sleep, or longevity. The no-DAC product also has much thinner direct human outcome evidence. Variant selection should reflect the intended research format, not claims that outrun the data.

Current No-DAC Prices and Cost Math

This August 27, 2026 PeptidePub catalog snapshot includes only listings whose product URLs explicitly identify no-DAC:

• Aero Peptides, 10 mg: $69.99, about $7.00/mg
• AMP, 5 mg: $38, or $7.60/mg
• EZ Peptides, 5 mg: $38, or $7.60/mg
• World Wide Peptides, 5 mg: $306, or $61.20/mg

That is a $54.20/mg difference and an approximately 8.7-fold spread from $7.00 to $61.20 per labeled milligram, before shipping, tax, or discounts.

Other tracked listings range from Valor at $48.99 for 10 mg, about $4.90/mg, to Main Peptides at $39.99 for 2 mg, about $20.00/mg. Peptide Society lists 10 mg at $49.99, about $5.00/mg. Ascension lists 10 mg at $80, or $8.00/mg. Atomik lists 5 mg at $45, or $9.00/mg. Main also lists 5 mg at $49.99, about $10.00/mg, and 10 mg at $74.99, about $7.50/mg.

Do not classify any of those listings as DAC or no-DAC until the live product page and lot report verify the variant.

Use price examples as math, not as a universal protocol. At $7.00/mg:

• 0.5 mg of total weekly material costs $3.50
• 1 mg costs $7.00
• 2 mg costs $14.00

Formula: total weekly milligrams × delivered dollars per milligram = weekly material cost.

Offers and stock change. Check current CJC-1295 prices, then use the cost-per-dose tool with your own total-milligram input. Include shipping, tax, and valid discounts before calling one offer cheaper. A low sticker price on an ambiguous variant is not a bargain.

The Label and COA Checks That Prevent a Wrong-Variant Buy

Require the product page and lot-matched COA to say one of the following:

• CJC-1295 with DAC
• Modified GRF 1-29
• CJC-1295 no-DAC

A report saying only CJC-1295 leaves the central identity question unresolved.

Next, check exact identity, product-lot match, HPLC or UPLC purity, quantitative net content, named laboratory, test date, and relevant sterility or endotoxin evidence for the format. A 99 percent purity result does not prove that a vial contains the labeled number of milligrams. Quantitative content is what makes price per verified milligram defensible.

Use vendor transparency comparisons and check current deals before checkout. If buying through Bodybuilding Health, confirm the exact current product, variant, lot evidence, price, and terms first.

This sequence protects against the most expensive mistake in this category: paying a competitive price per milligram for the wrong molecule or an unverified fill.

Vial Size, Reconstitution, and Stack Format

Compare single-compound vials separately from CJC-1295 plus ipamorelin blends. A blend labeled 10 mg commonly contains 5 mg CJC-1295 and 5 mg ipamorelin. It is not a 10 mg CJC-1295 vial.

Before comparing a blend, verify whether its CJC component is DAC or no-DAC and confirm the milligrams of each ingredient. Do not divide the total blend price by total milligrams and imply that both components carry equal value.

For reconstitution math:

vial milligrams ÷ final milliliters = mg/mL

Multiply mg/mL by 1,000 to get micrograms/mL. The reconstitution calculator handles vial concentration and syringe-unit math visually. Our Peptide Handbook also pre-computes reconstitution tables across injectable compounds when you want the arithmetic in one place.

There is no useful universal frequency assumption for comparing these variants. DAC and no-DAC differ sharply in duration, and practical cost depends on the chosen research design. Model cost from your own total-milligram input after confirming identity.

For blend-specific buying checks, see the CJC-1295 and ipamorelin buyer guide. Broader comparisons are covered in CJC-1295/ipamorelin vs tesamorelin and HGH vs CJC/ipamorelin vs tesamorelin.

FAQ

Is CJC-1295 without DAC the same as Mod GRF 1-29?

Yes. Mod GRF 1-29 is the more precise name for the short-acting product commonly marketed as CJC-1295 no-DAC.

How long does CJC-1295 with DAC last?

The primary human study estimated a 5.8 to 8.1 day half-life. After one injection, mean GH remained elevated for at least 6 days and mean IGF-1 for 9 to 11 days.

Which version is usually paired with ipamorelin?

No-DAC is commonly paired with ipamorelin in research-market blends. Naming is inconsistent, so verify both the label and lot-matched COA before buying.

Is the cheapest CJC-1295 vial the best value?

Only when the exact variant, vial mass, quantitative content, lot evidence, shipping, tax, and valid discounts are comparable. An inexpensive vial with unclear identity cannot be ranked confidently against a verified product.

Can DAC and no-DAC prices be compared directly?

You can display price per milligram, but a useful cost comparison requires matching compound identity and a clearly stated total-milligram input. Their very different durations make schedule-based assumptions misleading.

Does high purity prove the labeled vial amount?

No. HPLC or UPLC purity describes the proportion of detected material that matches the target. Quantitative content is needed to verify whether the vial contains the claimed mass.

Bottom Line: Verify the Variant Before Comparing the Price

The best buy is the intended DAC or no-DAC molecule at the lowest delivered price among products with comparable lot-matched proof and quantitative content.

Use this buyer sequence:

1. Confirm CJC-1295 with DAC or Modified GRF 1-29 no-DAC.
2. Verify the vial mass and each component in a blend.
3. Inspect the lot-matched COA for identity, purity, quantitative content, laboratory, and test date.
4. Calculate delivered price per verified milligram.
5. Model cost using your own total-milligram input.
6. Check /deals before checkout.

The current explicit no-DAC listings span about 8.7 times in labeled price per milligram, so comparison can save real money. The spread is meaningful only after the variant and evidence match.

Use the CJC-1295 guide to understand the compound, CJC-1295 prices to compare current offers, and the vendor directory to see which sellers provide the transparency needed for a defensible purchase.