Lab Workflow

Clinical laboratory sample processing from collection to results

Healthcare
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Lead 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%