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Read Schedule -> Check Inventory -> Score Readiness -> Prompt Reorder

Reference Standard and Reagent Readiness Agent

Before a planned test run, this agent checks that every reference standard and reagent it needs is in date, qualified, and stocked in enough quantity. It returns a go or no-go readiness list per run, names the exact item that would block it, and prompts a reorder or re-qualification in time to fix it.

The Problem

The run was booked. The standard expired last week. The lab found out at the bench.

A test run is scheduled and the analyst sets up, only to reach for a reference standard that expired or a reagent that is down to a few milliliters. Now the run stalls while someone hunts for a replacement or starts a re-qualification that takes days. The expiry date was sitting in the inventory sheet the whole time, but nobody checked it against the schedule before the run.

What Changes

The run is booked. The agent checks the standards and reagents before the analyst does.

The agent reads the upcoming test schedule and the standard and reagent inventory, then checks expiry, qualification status, and quantity for every item each run needs. It returns a go or no-go per scheduled run, names the one item that would block it, and prompts a reorder or re-qualification while there is still time to act.

Humans stay in control: the agent flags what is short or expired and prompts the action, the lab lead places the order and signs the re-qualification.

HOW THE AGENT WORKS

TRIGGERLLMAPIDECISIONACTIONWAIT
TRIGGERLook ahead at scheduleFires each morning and looks a set number of days ahead at the test schedule.
APIPull schedule and inventoryReads the planned runs and the standard and reagent inventory with expiry and quantity.
LLMMap runs to required itemsLists the standards and reagents each run needs using the method-to-item mapping.
LLMCheck expiry, qualification, quantityCompares each required item against inventory for date, qualification, and amount.
DECISIONAny run blocked?
LLMDraft reorder or re-qual promptWrites a reorder or re-qualification prompt for each blocking item with lead time noted.
ACTIONSend readiness listDelivers the go or no-go list, the blocking items, and the prompts to the lab lead.
The agent does not order reagents or qualify standards. Your QC lab lead does. The agent removes the manual cross-check so the lead sees the blocking item days ahead instead of at the bench.

HOW TO BUILD IT

Three levels of depth. Pick the one that matches where you are.

For the ops person who needs to understand what's involved and brief their team.

Schedule and inventoryTest runs plus reagent stock
The AgentWorkflow engine + LLM
Lab lead inboxGo or no-go per run

WHAT YOUR TEAM PROVIDES ONCE

  • Readiness verdict - a go or no-go for each scheduled run
  • Blocking item - the exact standard or reagent that would stop the run
  • Expiry check - which items expire before the run date
  • Quantity check - which items fall short of the amount the run needs
  • Reorder prompt - a draft reorder or re-qualification request with lead time noted
What happens day-to-day: each morning the agent looks a set number of days ahead at the test schedule, checks every required standard and reagent for date, qualification, and quantity, and sends the lab lead a go or no-go list with the blocking item and a reorder prompt for anything short.

For the IT person or technical lead who needs to scope the integration.

INQUIRY SOURCES

Test schedule (planned runs with the methods and items each needs)
Standard and reagent inventory (item, expiry, qualification status, quantity on hand)
Method-to-item mapping (which standards and reagents each method consumes)

WORKFLOW ENGINE (N8N)

Daily look-ahead timer fires
Pull test schedule
Pull standard and reagent inventory
Map runs to required items
Check date, qualification, quantity
Any run blocked
Send readiness list and prompts

CONNECTS TO

Test schedule (LIMS / scheduler - LabWare / STARLIMS / spreadsheet)Read: planned runs, methods, dates. Write: none
Inventory (LIMS / spreadsheet - LabWare / Excel)Read: item, expiry, qualification, quantity. Write: none
Method master (LIMS)Read: standards and reagents per method. Write: none
Notification (Slack / Teams / Email)Read: none. Write: readiness list, reorder prompt
WITHOUT PMS API

Without API access, export the schedule and inventory to CSV into a watched folder. The agent still scores readiness, but someone refreshes the inventory export and expiry dates may lag what is really on the shelf.

WITH PMS API

With API access the agent reads the schedule and live inventory from LIMS each morning, so the readiness list reflects what is actually on the shelf and what is booked. Expiry and qualification status come straight from the record. Best experience.

For the person who wants to build this agent step by step. Each node below maps to an n8n workflow node.

TRIGGERNode 1
Trigger - look ahead each morning
Schedule trigger set to a daily time with a configurable look-ahead window.
Output: A run event carrying the runs booked inside the look-ahead window.
APINode 2
API - pull schedule and inventory
HTTP request nodes to the test schedule, the inventory, and the method-to-item mapping.
Output: Planned runs plus item expiry, qualification, and quantity on hand.
LLMNode 3
LLM - map runs to required items
Model node fed the runs and the method-to-item mapping, low temperature.
Output: Each run's required standards and reagents with the quantity consumed.
You are a QC readiness planner. For each scheduled run below, list the reference standards and reagents it needs using the method-to-item mapping, with the quantity each run consumes. Runs: {runs} Mapping: {method_items} Respond ONLY with valid JSON. No explanation.
INPUT
{"runs": [{"run_id": "R-3301", "method": "HPLC-A", "date": "2026-08-24"}], "method_items": [{"method": "HPLC-A", "items": [{"item": "Ref Std X", "qty_needed": 2}, {"item": "Buffer B", "qty_needed": 500}]}]}
OUTPUT
{"runs": [{"run_id": "R-3301", "date": "2026-08-24", "required": [{"item": "Ref Std X", "qty_needed": 2}, {"item": "Buffer B", "qty_needed": 500}]}]}
LLMNode 4
LLM - check readiness and draft prompt
Model node fed the required items and the inventory record for each run.
Output: A go or no-go verdict per run with blocking items and draft prompts.
You are a QC readiness checker. For each run's required items, compare against inventory. Mark an item blocking if it expires before the run date, is not qualified, or has less quantity than needed. Set the run to no_go if any item blocks it, otherwise go. For each blocking item, draft a short reorder or re-qualification prompt. Required: {required} Inventory: {inventory} Respond ONLY with valid JSON. No explanation.
INPUT
{"required": [{"run_id": "R-3301", "date": "2026-08-24", "items": [{"item": "Ref Std X", "qty_needed": 2}]}], "inventory": [{"item": "Ref Std X", "expiry": "2026-08-20", "qualified": true, "qty": 5}]}
OUTPUT
{"runs": [{"run_id": "R-3301", "verdict": "no_go", "blocking": [{"item": "Ref Std X", "reason": "expires 2026-08-20 before run date", "prompt": "Re-order or re-qualify Ref Std X before 2026-08-24"}]}]}
ACTIONNode 5
Action - post readiness list
Notification node that sends the go or no-go list and reorder prompts to the lab lead.
Output: A delivered readiness list the lab lead acts on before the run.
MVP vs Advanced — Where To Start
MVP — START HERE
  • Start with one instrument and its handful of standards and reagents.
  • Export the test schedule and inventory to CSV into a watched folder.
  • Map each run to the items its method needs and the quantity used.
  • Check each item for expiry before the run date, qualification, and quantity on hand.
  • Mark each run go or no-go and name the blocking item.
  • Email the lab lead a readiness list with a reorder prompt for anything short.
ADVANCED — ADD LATER
  • =+ Connect LIMS so schedule and inventory read live each morning.
  • =+ Add supplier lead times so reorder prompts fire with enough days to arrive.
  • =+ Include re-qualification turnaround so expiring standards get flagged early enough.
  • =+ Roll readiness across a rolling two-week horizon, not just the next run.
  • =+ Post a daily go or no-go board to the lab Teams channel.
  • =+ Track how often runs are blocked and by which items to fix reorder points.

Full Video Walkthrough Coming Soon

Watch the agent turn next week's test schedule into a go or no-go readiness list per run.

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Frequently asked questions

Reference Standard and Reagent Readiness Agent is an AI agent that checks every standard and reagent is in date, qualified, and enough before each run.
The run was booked. The standard expired last week. The lab found out at the bench. The Reference Standard and Reagent Readiness Agent addresses this: checks every standard and reagent is in date, qualified, and enough before each run.
No. Your team stays in control. The agent does not order reagents or qualify standards. Your QC lab lead does. The agent removes the manual cross-check so the lead sees the blocking item days ahead instead of at the bench.

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