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USP <85> Endotoxin Limit Calculator

K/M screening limit — EU/mL and EU/container from dose, volume, and route.

Estimate the bacterial endotoxin limit for a parenteral container using USP <85> K/M screening math — for batch release planning alongside your LAL method.

Maximum dose in container (mg)

Fill volume (mL)

Route of administration

Reference body weight (kg)

Standard screening assumption: 70 kg adult.

Results

Endotoxin limit

7.00 EU/container

Limit concentration

0.700 EU/mL

K constant

5 EU/kg

Route

Parenteral (IV, IM, SC, etc.)

Screening limit ≈ 7.00 EU per container (0.700 EU/mL in 10 mL) using K=5 for Parenteral (IV, IM, SC, etc.). Compare LAL results to this limit and your validated method — confirm M, K, and monograph limits against your current USP-NF edition before release.

infoCompendial planning aid. Compendial planning aid only — not a substitute for your validated SOP, pharmacopeial edition in force, regulatory submission, or qualified-person release decision. Always verify sampling tables against the official USP-NF (or applicable pharmacopeia) and your quality system before testing or batch disposition.

Need expert help?

Document endotoxin rationale in Pharma Quality Studio

Pharma Quality Studio helps you tie LAL results to release specs, monograph limits, and audit-ready batch records with Melody.

psychologySpecialist: Melody — Pharma & GMP

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Endotoxin limits gate every parenteral release

USP <85> defines how to calculate bacterial endotoxin limits using K and M constants — the screening math QC uses before comparing LAL or rFC results to release specs.

Route matters: intrathecal products use a much lower K than standard parenterals. Dose in the container and fill volume drive both EU/mL and EU/container limits.

This calculator gives fast screening numbers. Pharma Quality Studio is where you document method validation, monograph cross-checks, and release narratives auditors expect.

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