Baby Safety / Compounds / Testosterone

Is Testosterone safe for babies and kids?

Elevated risk for kids

Infants have immature drug-metabolizing enzymes (CYP450 ontogeny), reduced renal clearance, and different volume of distribution. Accidental exposure or breast milk transfer of Testosterone poses heightened risk.

What is testosterone?

The IUPAC name is (8R,9S,10R,13S,14S,17S)-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one.

Also known as: (8R,9S,10R,13S,14S,17S)-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one, Virosterone, Homosterone, Mertestate.

IUPAC name
(8R,9S,10R,13S,14S,17S)-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
CAS number
58-22-0
Molecular formula
C19H28O2
Molecular weight
288.4 g/mol
SMILES
CC12CCC3C(C1CCC2O)CCC4=CC(=O)CCC34C
PubChem CID
6013

Risk for babies

Elevated risk

Infants have immature drug-metabolizing enzymes (CYP450 ontogeny), reduced renal clearance, and different volume of distribution. Accidental exposure or breast milk transfer of Testosterone poses heightened risk.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Elevated risk

Testosterone poses pregnancy risk through potential teratogenicity, altered pharmacokinetics (increased blood volume, changed CYP activity), and placental transfer. FDA pregnancy category should be evaluated.

Suspected reproductive toxicant (GHS H361) or suspected endocrine disruptor. Precautionary approach warranted. Animal studies or limited human data suggest developmental toxicity potential.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

4 regulatory and scientific bodies have classified Testosterone. The classifications differ — that's the data.

AgencyYearClassificationNotes
IARC (androgens as anabolic steroid drug class classified Group 2A in Vol 100A, 2012; testosterone as individual endogenous hormone not directly classified)2012IARC Group 2A for androgenic anabolic steroid drugs as a class; testosterone is the principal endogenous androgen; androgenic disruption of aquatic organisms documented; controlled substance (Schedule III in USA); abuse potential for performance enhancement; not classified for carcinogenicity by NTP, EFSA, or US EPA as individual compound
EPA CTX / CalEPA—Known human carcinogen
EPA CTX / Genetox—Genotoxicity: positive (Ames: None, 2 positive / 2 negative reports)
EPA CTX / Genetox—Genotoxicity: positive (Ames: None, 2 positive / 2 negative reports)

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter testosterone

  • Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
  • Occupational Environments — Factories, Warehouses, Transportation vehicles

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Testosterone:

  • Therapeutic alternatives (consult prescriber)
    Trade-offs: Drug-specific. Cannot substitute without medical guidance.
    Relative cost: 1.2-2×

Frequently asked questions

Is testosterone safe for kids?

Infants have immature drug-metabolizing enzymes (CYP450 ontogeny), reduced renal clearance, and different volume of distribution. Accidental exposure or breast milk transfer of Testosterone poses heightened risk.

What products contain testosterone?

Testosterone appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

What should I do if my child is exposed to testosterone?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Why do regulators disagree about testosterone?

Testosterone has been classified by 4 agencies including IARC (androgens as anabolic steroid drug class classified Group 2A in Vol 100A, 2012; testosterone as individual endogenous hormone not directly classified), EPA CTX / CalEPA, EPA CTX / Genetox, EPA CTX / Genetox, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.

See Testosterone in the baby app

Look up products containing testosterone, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (1)
  1. IARC Monographs Vol 100A 2012: Androgens Anabolic Steroid Drug Class Group 2A; Hepatocellular Carcinoma 17α-Alkylated; Prostate Cancer PSA; CAFO Androgenic Effluent Fish Masculinization; Schedule III USA; TRT Monitoring Erythrocytosis (2012) — regulatory

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →