{"id":724,"date":"2026-09-01T15:21:54","date_gmt":"2026-09-01T15:21:54","guid":{"rendered":"https:\/\/nhdbio.com\/case-studies\/cjc-1295-dac-randomized-human-pharmacology\/"},"modified":"2026-10-11T08:32:05","modified_gmt":"2026-10-11T08:32:05","slug":"cjc-1295-dac%ef%bc%9a%e7%84%a1%e4%bd%9c%e7%82%ba%e5%8c%96%e3%83%92%e3%83%88%e8%96%ac%e7%90%86%e8%a9%a6%e9%a8%93","status":"publish","type":"case_study","link":"https:\/\/nhdbio.com\/ja\/case-studies\/cjc-1295-dac-randomized-human-pharmacology\/","title":{"rendered":"CJC-1295\uff08DAC\u4ed8\u304d\uff09\uff1a\u9577\u3044\u534a\u6e1b\u671f\u306f\u4f55\u3092\u6559\u3048\u3066\u304f\u308c\u308b\uff1f"},"content":{"rendered":"<h2>Why does DAC belong in the name?<\/h2>\n<p>The studied CJC-1295 was designed to bind albumin, a protein in blood. This design helps explain why the researchers expected a longer time course. DAC identifies that albumin-binding feature. A material described as \u201cwithout DAC\u201d cannot inherit the same half-life merely because the first part of the name looks similar.<\/p>\n<h2>What did the researchers measure?<\/h2>\n<p>Two randomized studies lasted 28 and 49 days in healthy adults. They measured CJC-1295 in the body and changes in growth hormone, or GH, and IGF-I. These blood measurements show a biological response. They are not measurements of stronger muscles, faster injury recovery or longer life. [1]<\/p>\n<figure class=\"nhd-research-diagram\">\n<ol>\n<li><b>01<\/b><span>DAC identity<\/span><\/li>\n<li><b>02<\/b><span>Blood concentration<\/span><\/li>\n<li><b>03<\/b><span>GH \/ IGF-I response<\/span><\/li>\n<\/ol><figcaption>Reading guide: separates the study questions; not raw data or a prediction of product performance.<\/figcaption><\/figure>\n<h2>What changes were reported?<\/h2>\n<p>After a single study administration, average GH concentrations rose two- to tenfold for at least six days; IGF-I rose 1.5- to threefold for nine to eleven days. Estimated CJC-1295 half-life was 5.8\u20138.1 days. These ranges summarize study observations rather than a timetable for using catalog material. [1]<\/p>\n<h2>Half-life is not \u201chow long it works\u201d<\/h2>\n<p>Half-life describes how long a measured amount or concentration takes to fall by half under the relevant model. Imagine a simplified amount falling from 100 units to 50: that is one half-life, not complete disappearance. A compound\u2019s concentration and a downstream hormone response are different measurements and need not share one clock.<\/p>\n<h2>What did the companion study add?<\/h2>\n<p>A companion publication examined the pattern of GH release during prolonged stimulation. GH can be released in pulses rather than at a constant rate. That is a question about the timing of hormone secretion. It does not turn the original blood results into proof of a physical-performance benefit. [2]<\/p>\n<h2>What should a material inquiry say?<\/h2>\n<p>Use the full name \u201cCJC-1295 with DAC\u201d and describe the experimental requirement. The product page below helps avoid selecting a differently named form. Ask which identity information and analytical records can be provided. Short volunteer studies cannot supply long-term safety evidence for a separate research batch.<\/p>\n<section class=\"nhd-research-products\">\n<h2>Related research products<\/h2>\n<div class=\"nhd-research-product-grid\">\n<article>\n<h3>CJC-1295 with DAC<\/h3>\n<p>The DAC identity discussed in this study.<\/p>\n<p><a href=\"https:\/\/nhdbio.com\/products\/cjc-1295-with-dac\/\">View product and variants \u2192<\/a><\/article>\n<\/div>\n<p>For a material inquiry, specify the name, quantity, laboratory purpose and records needed. The team will confirm the available scope.<\/p>\n<p><a class=\"nhd-lesson-button\" href=\"https:\/\/nhdbio.com\/quote\/\">Discuss material requirements \u2192<\/a><\/section>\n<section class=\"nhd-lesson-sources\">\n<h2>Original research and reading notes<\/h2>\n<ol>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/16352683\/\">CJC-1295 human pharmacology \u00b7 JCEM 2006<\/a><\/li>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17018654\/\">CJC-1295 and pulsatile GH \u00b7 JCEM 2006<\/a><\/li>\n<\/ol>\n<p>Study amounts and preparations identify experimental conditions, not recommended use. AI-assisted research explanation; sources checked 11 October 2026. NHD catalog materials are for research, development and manufacturing, not human or veterinary use.<\/p>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>\u7b4b\u8089\u3084\u56de\u5fa9\u306b\u3064\u3044\u3066\u4e3b\u5f35\u3059\u308b\u524d\u306b\u3001\u30db\u30eb\u30e2\u30f3\u6e2c\u5b9a\u5024\u3092\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>","protected":false},"author":0,"featured_media":4034,"template":"","class_list":["post-724","case_study","type-case_study","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>CJC-1295 With DAC: What Does a Long Half-Life Tell Us? | NHD<\/title>\n<meta name=\"description\" content=\"Understand the hormone measurements before making claims about muscle or recovery.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nhdbio.com\/ja\/\u4e8b\u4f8b\u7814\u7a76\/cjc-1295-dac\uff1a\u7121\u4f5c\u70ba\u5316\u30d2\u30c8\u85ac\u7406\u8a66\u9a13\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CJC-1295 With DAC: What Does a Long Half-Life Tell Us?\" \/>\n<meta property=\"og:description\" content=\"Understand the hormone measurements before making claims about muscle or recovery.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nhdbio.com\/ja\/\u4e8b\u4f8b\u7814\u7a76\/cjc-1295-dac\uff1a\u7121\u4f5c\u70ba\u5316\u30d2\u30c8\u85ac\u7406\u8a66\u9a13\/\" \/>\n<meta property=\"og:site_name\" content=\"NHD\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-11T08:32:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/10\/nhd-comic-724.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:description\" content=\"Peptide Raw Materials and Custom Peptide Synthesis\" \/>\n<meta name=\"twitter:label1\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data1\" content=\"2\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nhdbio.com\\\/case-studies\\\/cjc-1295-dac-randomized-human-pharmacology\\\/\",\"url\":\"https:\\\/\\\/nhdbio.com\\\/case-studies\\\/cjc-1295-dac-randomized-human-pharmacology\\\/\",\"name\":\"CJC-1295 With DAC: What Does a Long Half-Life Tell Us? | NHD\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nhdbio.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/nhdbio.com\\\/case-studies\\\/cjc-1295-dac-randomized-human-pharmacology\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/nhdbio.com\\\/case-studies\\\/cjc-1295-dac-randomized-human-pharmacology\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/nhdbio.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/nhd-comic-724.jpg\",\"datePublished\":\"2026-09-01T15:21:54+00:00\",\"dateModified\":\"2026-10-11T08:32:05+00:00\",\"description\":\"Understand the hormone measurements before making claims about muscle or recovery.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/nhdbio.com\\\/case-studies\\\/cjc-1295-dac-randomized-human-pharmacology\\\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/nhdbio.com\\\/case-studies\\\/cjc-1295-dac-randomized-human-pharmacology\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/nhdbio.com\\\/case-studies\\\/cjc-1295-dac-randomized-human-pharmacology\\\/#primaryimage\",\"url\":\"https:\\\/\\\/nhdbio.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/nhd-comic-724.jpg\",\"contentUrl\":\"https:\\\/\\\/nhdbio.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/nhd-comic-724.jpg\",\"width\":1200,\"height\":800,\"caption\":\"Editorial comic illustration: CJC-1295 Human Research. 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