If doctors recommend additional tests in the United States, further diagnostic procedures may be ordered before a final diagnosis or treatment decision is made. These tests may affect both the timeline of care and the total cost of your visit.
Testing decisions are based on clinical judgment at the time of evaluation.
What happens
During evaluation, a doctor may determine that more information is needed.
Additional tests may include:
- Laboratory tests
- Imaging (such as X-ray, CT scan, or MRI), including cases where hospitals order imaging scans to evaluate specific conditions.
- Specialist consultations
If tests are ordered:
- You may be asked to remain at the facility
- Samples may be collected, especially in cases where hospitals order laboratory tests to analyze medical conditions.
- Imaging or procedures may be scheduled
Some tests are completed immediately, while others may take longer depending on availability.
Results may be reviewed during the same visit or at a later time.
What determines the outcome
The outcome depends on:
- The type of symptoms being evaluated
- Initial findings from the examination
- Availability of testing resources
- Urgency of the suspected condition
Doctors may adjust testing plans based on new information as it becomes available.
Not all recommended tests are required to be completed immediately.
What it may lead to
Common outcome:
- Test results used to confirm or rule out conditions
- Treatment plan adjusted based on findings
Possible escalation:
- Additional tests ordered after initial results
- Referral to specialists, including situations where specialists are called during ER visits for further evaluation.
- Extended time in the facility
Worst realistic outcome:
- Delayed diagnosis if testing takes time
- Increased medical costs due to multiple procedures
- Discovery of more serious conditions requiring further care
Testing can expand beyond the original reason for the visit.
Common escalation triggers
- Unclear or inconclusive initial findings
- Symptoms that may indicate multiple conditions
- Results that require further confirmation
- Changes in condition during evaluation
What this depends on
Outcomes may vary based on:
- Type of facility (emergency room, clinic, hospital)
- Availability of equipment and specialists
- Insurance coverage and authorization requirements
- Clinical decisions made during the visit
Testing practices can differ between providers and locations.
Who controls the process
Testing decisions are made by physicians and medical staff.
Diagnostic services may involve:
- Hospital departments
- External laboratories
- Imaging centers
Billing may come from multiple providers depending on how tests are performed.
Last reviewed: April 2026
This page describes typical operational outcomes. Individual cases vary.