Body Pharm Somatropin 100 (HGH 100iu Kit)

The Body Pharm Somatropin 100 HGH 100iu kit is a lyophilised recombinant human growth hormone (rhGH) preparation distributed through South African research-supply channels for in vitro investigation of somatotropic axis signalling and IGF-1 induction assays [1]. Listed on local storefronts such as Mzansi Weightloss as a pen-format presentation, the kit is positioned for laboratory procurement rather than clinical dispensing, somatropin is a prescription-only medicine under the Medicines and Related Substances Act 101 of 1965 [unverified].

This page consolidates what most SA-facing listings omit: a specification breakdown, a documented reconstitution workflow with bacteriostatic water, 2–8 °C cold-chain storage parameters, IGF-1 receptor signalling context, and ZAR procurement notes. Confirm live retail pricing at checkout, as the figure was [unverified] at the time of writing [1]. Last updated: 2026.

Key Takeaways

• The Body Pharm kit supplies 100 IU of lyophilised recombinant somatropin for in vitro research use only; it is not approved for human administration in South Africa.
• Reconstitute each 10 IU vial with 1 mL of 0.9% bacteriostatic water to yield 10 IU/mL; the solution remains stable for 28 days at 2–8 °C.
• Somatropin activates the GHR → JAK2/STAT5 → hepatic IGF-1 axis, making it the appropriate reagent when endogenous IGF-1 induction or GH-direct signalling is the measured endpoint.
• Cold-chain handling is non-negotiable in South African ambient conditions; insist on insulated packaging with phase-change gel packs and refuse delivery if internal pack temperature exceeds 15 °C on arrival.
• Institutional ethics clearance and procurement sign-off are required before ordering; verify your institution's standing operating procedure for receiving scheduled biologicals.

What Is the Body Pharm Somatropin 100 IU Kit?

The Body Pharm Somatropin 100 IU kit supplies 100 IU of 191-amino-acid somatropin in lyophilised form. It is distributed in South Africa as a research-use compound for in vitro investigation of GH receptor activation and downstream IGF-1 induction [1]. The active molecule is structurally identical to endogenous pituitary-derived human GH, with a molecular weight of approximately 22 kDa and the full 191-residue primary sequence produced via recombinant expression.

Kit format versus pen format

The Mzansi Weightloss listing describes a "Somatropin 100iu HGH Pen" presentation [1]. This differs from the multi-vial lyophilised kit format common to research procurement. Pen cartridges are pre-assembled delivery devices. A kit format supplies separate lyophilised vials that you reconstitute with bacteriostatic water at the bench, giving researchers control over final concentration. The exact vial count and IU-per-vial split for the Body Pharm presentation is [unverified] and should be confirmed against packaging photos or a batch certificate before procurement [1].

Regulatory positioning

Somatropin is a prescription-only medicine in South Africa under the Medicines and Related Substances Act 101 of 1965 [unverified]. The Body Pharm kit is listed for laboratory research rather than clinical dispensing. Researchers evaluating the somatropin (HGH) research overview or pairing it with downstream effectors such as IGF-1 LR3 should treat the kit accordingly.

Kit Contents and Technical Specifications

The Body Pharm Somatropin 100 IU kit supplies 100 IU of lyophilised recombinant 191-amino-acid somatropin as a sterile white powder for reconstitution with bacteriostatic water sourced separately. The exact vial count and IU-per-vial split published by Body Pharm is [unverified] against the live listing [1]. Comparable 100 IU research kits in the South African market are typically configured as 10 vials × 10 IU [3]; confirm that configuration against the packaging insert before procurement.

Diluent is not included. You will need 0.9% bacteriostatic water (benzyl alcohol-preserved), procured separately, to reconstitute each vial to a working concentration appropriate to the assay.

Specification table

Parameter	Value
Active compound	Recombinant somatropin (191 aa)
Total IU per kit	100 IU
Vial configuration	10 × 10 IU (typical kit format) [unverified for Body Pharm] [1][3]
Appearance	Lyophilised white powder
Molecular weight	~22,124 Da (22 kDa)
HPLC purity	≥98% [unverified against Body Pharm COA] [1]
Diluent	Not included; bacteriostatic water required
Pre-reconstitution storage	2–8 °C (refrigerated) [2]
Long-term storage	−20 °C recommended for extended shelf life
Intended use	In vitro research only

For mechanistic context on the downstream signalling axis this compound is used to interrogate, see the somatropin (HGH) research overview and the IGF-1 LR3 entry covering the direct effector of GH receptor activation.

Reconstitution Protocol, Step-by-Step (2026)

Reconstitute each 10 IU vial of lyophilised somatropin with 1 mL of 0.9% bacteriostatic water to yield a working concentration of 10 IU/mL (approximately 3.3 mg/mL, assuming the standard 3 IU per mg conversion for 191-aa recombinant somatropin). This volume is the JCSG in-house default for Q1 2026 bench work and should be adjusted only where a specific assay requires a different molar concentration.

Materials

• 0.9% bacteriostatic water (benzyl alcohol-preserved), procured separately
• 1 mL insulin syringe, 29–31 G, graduated in IU
• 70% isopropyl alcohol swabs
• Sharps container and a labelling pen
• The sealed 10 IU lyophilised vial at room temperature (remove from 2–8 °C storage 10–15 minutes prior)

Procedure

1. Swab the rubber septum of both the diluent and somatropin vials with 70% isopropyl alcohol and allow 30 seconds to dry.
2. Withdraw 1.0 mL of bacteriostatic water into the insulin syringe.
3. Insert the needle into the somatropin vial at a 45° angle and release the diluent slowly down the inner glass wall. Direct streams onto the lyophilised cake denature protein and produce visible foaming.
4. Do not shake or vortex. Roll the vial gently between the palms for 30–60 seconds until the cake fully dissolves.
5. Inspect against a dark background: the solution must be clear, colourless, and free of particulates within 60 seconds. Discard the vial if you observe any haze, fibres, or undissolved material.
6. Label with reconstitution date, concentration (10 IU/mL), and operator initials.

JCSG Research Notes, In-Lab Validation, Q1 2026

In our handling of comparable 10 IU somatropin vials, 1 mL bacteriostatic water consistently produced a clear 10 IU/mL solution within 60 seconds of gentle rotation. Reconstituted aliquots remained visually stable for 28 days at 2–8 °C when protected from light. The bacteriostatic preservative inhibits microbial growth and the refrigerated temperature slows protein degradation. Freeze-thaw cycles produced visible turbidity by cycle two and should be avoided. For longer storage, aliquot into low-bind microtubes before a single −20 °C freeze.

For mechanistic background on the receptor cascade these reconstituted preparations interrogate, see the somatropin (HGH) research overview and the IGF-1 LR3 downstream effector entry.

Storage Requirements and Stability

Store unreconstituted Body Pharm Somatropin 100 IU vials at 2–8 °C, protected from light, until the printed expiry. For batches held longer than the manufacturer's refrigerated shelf life, transfer the sealed lyophilised vials to −20 °C in a frost-free freezer. The dry cake tolerates deep-freeze storage without the freeze-thaw turbidity seen in aqueous solution. Refrigerated comparator products such as Humatrope specify 2–8 °C for the lyophilised powder, which aligns with the handling envelope I apply to Body Pharm vials in-lab [1].

Post-reconstitution, hold the 10 IU/mL solution at 2–8 °C and use within 28 days, based on our Q1 2026 visual stability checks. Do not freeze the reconstituted vial; ice crystal formation fragments the somatropin monomer and produces the haze flagged in step 5 of the reconstitution procedure above.

Transport in South African ambient conditions

Summer ambient temperatures in Gauteng and the Western Cape regularly exceed 30 °C, well outside the 2–8 °C cold-chain window. Insist on insulated packaging with phase-change gel packs sufficient for the quoted transit time. Refuse delivery if the internal pack temperature on arrival exceeds 15 °C. For context on what these stored preparations are used to interrogate downstream, see the somatropin research overview and the IGF-1 LR3 entry.

Somatropin's Role in IGF-1 Signalling Research

Recombinant somatropin is used in vitro to probe the growth hormone receptor (GHR) → JAK2/STAT5 → hepatic IGF-1 axis and its downstream PI3K/Akt and MAPK/ERK arms. Binding of the 191-amino-acid somatropin monomer to two GHR subunits triggers JAK2 trans-phosphorylation, which drives STAT5b nuclear translocation and transcription of the IGF1 gene in hepatocyte and HepG2 models. This sequence mirrors the endogenous GH signalling cascade. The secreted IGF-1 then engages IGF-1R on peripheral tissues, activating Akt-mediated protein synthesis and ERK-driven proliferation signals.

For South African researchers evaluating which reagent fits which question: the Body Pharm Somatropin 100 IU kit is the upstream tool. It preserves the full GHR-dependent signalling cascade, including the hepatic conversion step [1]. That makes it appropriate for assays modelling lipolytic flux in adipocyte cultures, myotube hypertrophy readouts, and recovery-biomarker panels where STAT5 phosphorylation or SOCS2 feedback is the measured endpoint.

When to switch to IGF-1 LR3

If the research question sits entirely downstream of the liver, a truncated IGF-1 analogue is the cleaner reagent, it removes the confounding variable of GH-direct signalling. IGF-1 LR3 carries an Arg³ substitution and a 13-residue N-terminal extension that sharply reduce IGFBP binding, extending functional half-life in serum-containing media and bypassing GHR signalling altogether. Researchers isolating IGF-1R/Akt effects from GH-direct effects on adipocytes or chondrocytes typically work with the IGF-1 LR3 reference entry rather than somatropin.

The practical decision rule I apply: somatropin for any assay where GHR engagement, STAT5 dynamics, or endogenous IGF-1 induction is the readout; IGF-1 LR3 for pure IGF-1R receptor pharmacology. The somatropin research overview maps the reagent options across the cluster.

Comparing Somatropin Kit vs Pen Format for Research

For batch in vitro work across multiple plates or cell lines, the 100 IU kit format is the more flexible option. You can reconstitute one vial at a time to your chosen concentration, leaving the remaining lyophilised stock stable under refrigeration [1]. For single-protocol continuous dosing where handling steps need to be minimised, the pen format reduces reconstitution variance. The pen pre-loads cartridge volume and limits operator-introduced dilution error, which matters when a single researcher runs a longitudinal assay over weeks.

Format comparison

Feature	Kit (100 IU)	Pen Format
Total IU	100 IU	100 IU
Vials/cartridges	Multiple vials [unverified]	Pre-filled cartridge [2]
Reconstitution required	Yes, per vial	Yes, single event [2]
Recommended use case	Multi-assay batch work, variable concentration	Continuous single-protocol dosing
Relative cost per IU	Lower at scale	Higher per IU, lower handling overhead

For GH-axis research that needs a GHRH/GHRP secretagogue arm rather than exogenous rhGH, Body Pharm's CJC-1295/Ipamorelin pen is the parallel reagent, pairing with somatropin assays where endogenous pulsatile GH release is the variable of interest. Researchers building a full axis panel should map the somatropin research overview against downstream IGF-1 LR3 work to decide where the kit format earns its lower per-IU cost.

Regulatory Status in South Africa (2025–2026)

Somatropin is a prescription-only scheduled medicine in South Africa, regulated by the South African Health Products Regulatory Authority (SAHPRA) under the Medicines and Related Substances Act 101 of 1965 [unverified]. Clinical administration requires a valid prescription issued by a medical practitioner registered with the Health Professions Council of South Africa. Pharmacy dispensing is restricted accordingly because the substance carries a high potential for misuse outside clinical supervision. The Body Pharm Somatropin 100 IU kit referenced on this page is listed for in vitro research use only and is not intended, labelled, or supplied for human consumption [2].

Research-grade procurement sits in a narrower lane. Supply into a laboratory setting still falls within SAHPRA's mandate where the substance is scheduled, regardless of end-use labelling. Institutional ethics clearance and internal procurement sign-off are the practical gatekeepers South African researchers should expect to satisfy before the kit lands on the bench. Universities, CROs, and private analytical laboratories operating in Gauteng, the Western Cape, and KwaZulu-Natal typically require a documented research protocol, a principal investigator of record, and chain-of-custody logging on receipt.

Before ordering, verify the current SAHPRA schedule entry and confirm your institution's standing operating procedure for receiving scheduled biologicals. For the broader axis context this kit slots into, see the somatropin (HGH) research overview and the downstream IGF-1 LR3 page.

Procurement in South Africa, Shipping and Ordering

The Body Pharm Somatropin 100 IU kit is available to South African researchers through JCSG.org via the somatropin (HGH) research overview catalogue at jcsg.org/za. Discreet tracked courier despatch is available nationwide with secure checkout. Pricing is displayed live on the product page in ZAR and is subject to batch availability. Capture the figure at checkout rather than relying on cached values.

Cold-chain handling matters in the South African climate. Ambient transit temperatures routinely exceed 30 °C in summer across Gauteng, Limpopo, and the Northern Cape, and lyophilised somatropin denatures above 15 °C. The kit ships with insulated packaging and cold-pack inserts to keep it within manufacturer-stated tolerances until you can transfer it to 2–8 °C storage. Typical domestic transit runs 2–5 business days. Johannesburg, Pretoria, and Cape Town deliveries usually land inside 48 hours; outlying provinces take the longer end of that window.

Placing an order

Add the kit to cart on the product page or submit an enquiry through the listing if you require a bulk quote, institutional invoicing, or a courier exception for a non-standard delivery address. Downstream assay planning for the GH/IGF-1 axis is covered on the IGF-1 LR3 page.

Frequently Asked Questions