What is langcare-critical-values?

A clinical alert tool for finding laboratory results that cross urgent “panic value” limits. It uses patient data in FHIR, a standard format for exchanging health records.

Reviewing recent lab results, identifying breached critical thresholds, and creating structured notifications with the result, possible cause, immediate action, and monitoring plan.

It helps clinicians spot results needing immediate attention instead of checking every lab value manually. It also gathers related medications and conditions for context.

langcare-critical-values — Skill for Claude Code and Codex by langcare

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add langcare/langcare-mcp-fhir --skill critical-values

Clone the repo

git clone --depth 1 https://github.com/langcare/langcare-mcp-fhir

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/langcare/langcare-mcp-fhir/critical-values/github.svg)](https://agentmods.dev/skills/langcare/langcare-mcp-fhir/critical-values)

Your own site

<a href="https://agentmods.dev/skills/langcare/langcare-mcp-fhir/critical-values"><img src="https://agentmods.dev/badge/skills/langcare/langcare-mcp-fhir/critical-values/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/langcare/langcare-mcp-fhir/critical-values"><img src="https://agentmods.dev/badge/skills/langcare/langcare-mcp-fhir/critical-values.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 653 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00061	$0.00653
Opus 5.5	$0.00024	$0.00261
Sonnet 5.5	$0.00012	$0.00131
Haiku 4.5	$0.00006	$0.00065

Measured 2mo ago against content hash 2cc8f52ac382, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

langcare-critical-values scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

cma/skills/lab-diagnostics/critical-values/SKILL.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Critical Value Alert Generator

When to Use This Skill

Use when a clinician needs to identify laboratory results that fall outside critical (panic) value thresholds requiring immediate notification and intervention.

Clinical Workflow

Use fhir_search to pull recent Observation resources (category=laboratory) with interpretation codes HH or LL, or status=preliminary for pending results
Compare each result against CAP/CLIA critical value thresholds (see references/cap-clia-thresholds.md)
For each critical value: identify the analyte, current value, threshold breached, and timestamp
Use fhir_search to pull active MedicationRequest resources to identify contributing medications
Use fhir_search to pull active Condition resources for clinical context
Generate structured alert with: critical value details, probable cause, recommended immediate action, and monitoring plan

FHIR Resources

Observation -- Lab results with interpretation codes (HH, LL, H, L, A) and referenceRange
MedicationRequest -- Active medications that may contribute to the critical value
Condition -- Active conditions providing clinical context

FHIR Query Examples

Pull Labs with Critical Interpretation

fhir_search(resourceType="Observation", queryParams="patient=[patient-id]&category=laboratory&_sort=-date&_count=200")

Pull Pending Results

fhir_search(resourceType="Observation", queryParams="patient=[patient-id]&category=laboratory&status=preliminary,registered")

Clinical Guidelines

CAP (College of American Pathologists) critical value reporting requirements
CLIA '88 regulations for immediate notification of life-threatening results
Joint Commission NPSG.02.03.01: Report critical results in a timely manner

Interpretation Guide

Critical values require immediate clinician notification and read-back confirmation
For each critical value: state the value, the critical threshold, the clinical risk, and recommended immediate intervention
Common critical values and immediate actions: K+ <2.5 or >6.5 (ECG, replacement/Kayexalate), Na <120 or >160 (fluid management, correct slowly), glucose <40 or >500 (D50/insulin), Hgb <7 (transfusion threshold), platelets <20 (bleeding risk, transfusion), INR >5 (hold warfarin, vitamin K), troponin elevated (ACS protocol)

Read the full file on GitHub · 56 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

references/cap-clia-thresholds.md 4.7 KB

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 56 lines · 61 tokens per session scan A 2cc8f52ac382

Subscribe to this mod's changes

langcare-critical-values is a skill published in the GitHub repository langcare/langcare-mcp-fhir (71 stars, last pushed 6mo ago), licensed MIT. It adds 61 tokens to every session and 653 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

langcare-critical-values next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
langcare-critical-valueslangcare/langcare-mcp-fhir	Skill	71	6mo ago	MIT	A	61	Claude Code, Codex
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code