For patients prescribed somatropin (HGH)<\/a>. Educational only; always follow your product label and your clinician\u2019s instructions.<\/em><\/p>\n Quick summary:<\/strong><\/p>\n Before mixing:<\/strong> Most lyophilized (powder) HGH should be refrigerated 2\u20138 \u00b0C (36\u201346 \u00b0F)<\/strong> and protected from light.<\/p>\n<\/li>\n After mixing:<\/strong> Keep refrigerated; usable window varies by brand and diluent (e.g., ~14 days with bacteriostatic water<\/strong> for some products; shorter with sterile water<\/strong>). Some liquid pens allow limited room-temperature use<\/strong> after first use. Always confirm on your exact label.<\/p>\n<\/li>\n<\/ul>\n HGH (somatropin)<\/a> is supplied either as:<\/p>\n Lyophilized powder in vials<\/strong> (requires reconstitution before injection), or<\/p>\n<\/li>\n Prefilled liquid pens\/cartridges<\/strong> (already in solution, used with a pen device).<\/p>\n<\/li>\n<\/ul>\n Brand handling and stability rules differ (e.g., Genotropin<\/a>, Omnitrope<\/a>, Humatrope<\/a>, Norditropin<\/a>). Always default to the instructions that came with your specific product.<\/p>\n Temperature:<\/strong> Store in a refrigerator (2\u20138 \u00b0C \/ 36\u201346 \u00b0F)<\/strong> unless your label explicitly allows otherwise.<\/p>\n<\/li>\n Light \/ handling:<\/strong> Keep in original carton, protect from light; do not freeze<\/strong>.<\/p>\n<\/li>\n Travel:<\/strong> Use an insulated pouch\/cold pack; avoid heat spikes.<\/p>\n<\/li>\n<\/ul>\n Some labels allow limited room-temperature periods before<\/em> mixing; this is brand-specific. Follow your exact insert.<\/p>\n<\/blockquote>\n Your HGH vial (powder)<\/strong><\/p>\n<\/li>\n Diluent<\/strong>: usually Bacteriostatic Water for Injection (0.9% benzyl alcohol)<\/strong> for multi-dose use; some kits include Sterile Water for Injection<\/strong> (single-use, much shorter shelf life)<\/p>\n<\/li>\n Alcohol swabs, insulin syringes or mixing device, clean surface<\/p>\n<\/li>\n<\/ul>\n Shelf life after mixing depends heavily on diluent<\/strong>: many labels list ~14 days refrigerated<\/strong> with bacteriostatic water<\/em> and ~24 hours<\/strong> with sterile water<\/em>. Confirm on your product\u2019s insert.<\/p>\n<\/blockquote>\n Clean & check:<\/strong> Wash hands. Wipe vial stoppers with alcohol; let dry.<\/p>\n<\/li>\n Add diluent slowly:<\/strong> Insert the diluent needle through the stopper and let the diluent run down the side<\/strong> of the vial. Do not shake<\/strong>; this helps prevent foaming\/denaturing.<\/p>\n<\/li>\n Dissolve gently:<\/strong> Swirl<\/strong> or roll the vial gently until fully dissolved. Solution should be clear and particle-free<\/strong>; if cloudy or with particles, do not use<\/strong>.<\/p>\n<\/li>\n Label & store:<\/strong> Mark the date\/time mixed<\/strong> and put it immediately in the refrigerator (2\u20138 \u00b0C \/ 36\u201346 \u00b0F)<\/strong> unless your label specifies otherwise.<\/p>\n<\/li>\n<\/ol>\n Refrigerate<\/strong> at 2\u20138 \u00b0C (36\u201346 \u00b0F)<\/strong>. Do not freeze.<\/strong> Protect from light.<\/p>\n<\/li>\n Use-by window depends on brand & diluent<\/strong>:<\/p>\n Humatrope<\/strong><\/a>: after mixing, use within 14 days refrigerated<\/strong> (bacteriostatic water). If mixed with sterile water, use within 24 hours.<\/strong><\/p>\n<\/li>\n Genotropin pen<\/a> cartridges<\/strong>: discard after 28 days<\/strong> refrigerated between uses.<\/p>\n<\/li>\n Omnitrope<\/a> cartridges<\/strong>: stable up to 28 days refrigerated<\/strong> after first use. (Vial reconstituted with non-preserved<\/em> diluent may be 24 hours<\/strong>.)<\/p>\n<\/li>\n\n
\nWhat is HGH (Somatropin) and how is it supplied?<\/h2>\n
\n
\nStorage \u2014 Before Reconstitution (Powder Vials)<\/h2>\n
\n
\n
\nReconstitution (Mixing) \u2014 Powder Vials<\/h2>\n
What you\u2019ll typically need<\/h3>\n
\n
\n
Step-by-step (general, brand-agnostic)<\/h3>\n
\n
\nStorage \u2014 After Reconstitution (Mixed Solution)<\/h2>\n
\n
\n