{
    "schema": 1,
    "fid": "insulin-needles-pen-fit-and-the-units-needle-wastes",
    "type": "article",
    "object_id": 24605,
    "title": "Insulin needles pen fit and the units a needle wastes",
    "entity": "Insulin needles pen fit and the units a needle wastes",
    "url": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes",
    "facts_url": "https://www.preppinpeppers.com/facts/insulin-needles-pen-fit-and-the-units-needle-wastes",
    "currency": null,
    "tldr": "Insulin pen needles are screw-on needles that thread onto a reusable pen.",
    "facts": [
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:title",
            "category": "identity",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "title",
            "value": "Insulin needles pen fit and the units a needle wastes",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:published",
            "category": "identity",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "published",
            "value": "2026-10-27",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:author",
            "category": "identity",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "author",
            "value": "PreppinPeppers Editorial Team",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:topics",
            "category": "identity",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "topics",
            "value": "insulin needles pen, peptide pen, reconstitution, research",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:summary",
            "category": "content",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "summary",
            "value": "Insulin pen needles are screw-on needles that thread onto a reusable pen.",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:section-1",
            "category": "content",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "section",
            "value": "What is an insulin pen needle, and what fits a research pen?",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:section-2",
            "category": "content",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "section",
            "value": "Which needles work with which pen?",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:section-3",
            "category": "content",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "section",
            "value": "How much liquid does a new needle use before it works?",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:section-4",
            "category": "content",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "section",
            "value": "Where does the last of the liquid go?",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:section-5",
            "category": "content",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "section",
            "value": "What does the research community get wrong about pen needles?",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:section-7",
            "category": "content",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "section",
            "value": "Related reading",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:product-gansulin-metal-peptide-pen",
            "category": "products",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "references product",
            "value": "Gansulin Pen · Reusable Click-Dial, 3 ml (1-60 Units)",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/products/gansulin-metal-peptide-pen"
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        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:product-gansulin-3ml-cartridge",
            "category": "products",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "references product",
            "value": "Gansulin-Compatible 3 ml Glass Cartridge for Pens (10-Pack)",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/products/gansulin-3ml-cartridge"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:product-bacteriostatic-water-30ml",
            "category": "products",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "references product",
            "value": "Bacteriostatic Water 30 ml Multi-Dose Vial (Pfizer Hospira, USP)",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://www.preppinpeppers.com/products/bacteriostatic-water-30ml"
        },
        {
            "id": "insulin-needles-pen-fit-and-the-units-needle-wastes:source-pubmed-ncbi-nlm-nih-gov",
            "category": "source",
            "entity": "Insulin needles pen fit and the units a needle wastes",
            "attribute": "cites",
            "value": "Bohannon, Postgrad Med 1999: Insulin delivery using pen devices. Simple-to-use tools may help young and old alike - pubmed.ncbi.nlm.nih.gov",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes)",
            "evidence": "https://pubmed.ncbi.nlm.nih.gov/10560468/"
        }
    ],
    "buy": [],
    "faq": [
        {
            "q": "Does the Gansulin pen kit include needles?",
            "a": "No. No PreppinPeppers pen or kit includes pen needles, and we do not sell them. Buy universal 28G to 33G screw-on pen needles separately before your first session."
        },
        {
            "q": "What needle gauge fits insulin pens used for peptide research?",
            "a": "All four PreppinPeppers pens (Gansulin, V1, V2, V3) take universal 28G to 33G screw-on pen needles. A higher gauge number means a thinner needle."
        },
        {
            "q": "Do Gansulin pen needles need to be bought separately?",
            "a": "Yes. Needles are not included in any pen or kit. We do not sell them, so source universal 28G to 33G screw-on needles yourself."
        },
        {
            "q": "How do I do an air check on the Gansulin pen?",
            "a": "Set 1 or 2 units, hold the needle pointing up, and press until a drop shows. On a 300-unit cartridge that is 0.01 to 0.02 ml."
        },
        {
            "q": "How many units can priming a needle use up?",
            "a": "If no drop appears, the step may be repeated before the needle is changed, and each repeat uses more units. That can use up to 10 units, which is 0.1 ml."
        },
        {
            "q": "How much liquid stays in the cartridge on the Gansulin pen?",
            "a": "When the dial stops, about 3.7 mm of liquid remains, roughly 0.27 ml or 27 units on a 3 ml cartridge. The needle holds a little more."
        },
        {
            "q": "Do these pens work with standard 3 ml cartridges?",
            "a": "Any standard 3 ml (ISO 13926) cartridge fits physically. Our cartridges use the 11 mm long plunger, and plunger height decides whether the unit scale reads true."
        }
    ],
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            "@context": "https://schema.org",
            "@type": "Article",
            "headline": "Insulin needles pen fit and the units a needle wastes",
            "url": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes",
            "mainEntityOfPage": "https://www.preppinpeppers.com/blogs/the-lab/insulin-needles-pen-fit-and-the-units-needle-wastes",
            "datePublished": "2026-10-27",
            "dateModified": "2026-10-28",
            "author": {
                "@type": "Person",
                "name": "PreppinPeppers Editorial Team"
            },
            "publisher": {
                "@type": "Organization",
                "name": "PreppinPeppers"
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            "description": "Insulin pen needles are screw-on needles that thread onto a reusable pen."
        },
        {
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            "@type": "FAQPage",
            "url": "https://www.preppinpeppers.com/facts/insulin-needles-pen-fit-and-the-units-needle-wastes",
            "mainEntity": [
                {
                    "@type": "Question",
                    "name": "Does the Gansulin pen kit include needles?",
                    "acceptedAnswer": {
                        "@type": "Answer",
                        "text": "No. No PreppinPeppers pen or kit includes pen needles, and we do not sell them. Buy universal 28G to 33G screw-on pen needles separately before your first session."
                    }
                },
                {
                    "@type": "Question",
                    "name": "What needle gauge fits insulin pens used for peptide research?",
                    "acceptedAnswer": {
                        "@type": "Answer",
                        "text": "All four PreppinPeppers pens (Gansulin, V1, V2, V3) take universal 28G to 33G screw-on pen needles. A higher gauge number means a thinner needle."
                    }
                },
                {
                    "@type": "Question",
                    "name": "Do Gansulin pen needles need to be bought separately?",
                    "acceptedAnswer": {
                        "@type": "Answer",
                        "text": "Yes. Needles are not included in any pen or kit. We do not sell them, so source universal 28G to 33G screw-on needles yourself."
                    }
                },
                {
                    "@type": "Question",
                    "name": "How do I do an air check on the Gansulin pen?",
                    "acceptedAnswer": {
                        "@type": "Answer",
                        "text": "Set 1 or 2 units, hold the needle pointing up, and press until a drop shows. On a 300-unit cartridge that is 0.01 to 0.02 ml."
                    }
                },
                {
                    "@type": "Question",
                    "name": "How many units can priming a needle use up?",
                    "acceptedAnswer": {
                        "@type": "Answer",
                        "text": "If no drop appears, the step may be repeated before the needle is changed, and each repeat uses more units. That can use up to 10 units, which is 0.1 ml."
                    }
                },
                {
                    "@type": "Question",
                    "name": "How much liquid stays in the cartridge on the Gansulin pen?",
                    "acceptedAnswer": {
                        "@type": "Answer",
                        "text": "When the dial stops, about 3.7 mm of liquid remains, roughly 0.27 ml or 27 units on a 3 ml cartridge. The needle holds a little more."
                    }
                },
                {
                    "@type": "Question",
                    "name": "Do these pens work with standard 3 ml cartridges?",
                    "acceptedAnswer": {
                        "@type": "Answer",
                        "text": "Any standard 3 ml (ISO 13926) cartridge fits physically. Our cartridges use the 11 mm long plunger, and plunger height decides whether the unit scale reads true."
                    }
                }
            ]
        }
    ],
    "dates": {
        "published": "2026-10-27",
        "modified": "2026-10-28"
    }
}