Lab Workflow
Clinical laboratory sample processing from collection to results
HealthcareLead Time
7.85h
Cycle Time
2.35h
Wait Time
5.5h
PCE
23.6%
Stages
6
Bottleneck
Analysis
Value-Add vs Non-Value-Add
Value-Add (VA)
An activity is value-add if it meets all three criteria:
- The customer is willing to pay for it
- It transforms the product or service
- It is done right the first time
Examples: Assembly, diagnosis, treatment, coding, machining, testing
Non-Value-Add (NVA)
Activities that consume time or resources but don't add value from the customer's perspective:
- Waiting — queues, approvals, batching delays
- Transport — moving materials or information
- Motion — unnecessary movement of people
- Rework — correcting defects or errors
- Over-processing — doing more than required
Note: Some NVA is necessary (compliance, safety). Target unnecessary NVA first.
Process Timeline
Value-Add vs Non-Value-Add
Bottleneck Analysis
Stage Efficiency
| # | Stage | Cycle (h) | Wait (h) | VA | Resource | Defect % | Efficiency |
|---|---|---|---|---|---|---|---|
| 1 | Sample Collection | 0.25 | 0.5 | VA | Phlebotomist | 3.0% | 33.3% |
| 2 | Sample Transport | 0.5 | 1.0 | NVA | Courier | 2.0% | 33.3% |
| 3 | Accessioning | 0.25 | 0.5 | VA | Lab Tech | 5.0% | 33.3% |
| 4 | Analysis | 1.0 | 2.0 | VA | Analyser | 2.0% | 33.3% |
| 5 | Results Validation | 0.25 | 0.5 | VA | Pathologist | 4.0% | 33.3% |
| 6 | Report Distribution | 0.1 | 1.0 | VA | System | 1.0% | 9.1% |