Laboratory Orders, Results Management, and Critical Value Reporting

Why Laboratory Orders and Results Management Matter

The medical assistant plays a central role in the laboratory workflow. You are often the person who enters the provider's order into the electronic health record (EHR), receives results back from the laboratory, files those results in the correct patient chart, and—most critically—recognizes when a value is dangerously abnormal and must be reported to the provider immediately. Errors at any of these steps can delay treatment or harm a patient. Accuracy and speed both matter.

Entering a Laboratory Order in the EHR

When a provider writes an order for laboratory tests, your job is to translate that written order into an accurate electronic order without adding, dropping, or changing anything. A properly entered order includes:

• Patient identification – verify name and date of birth against the chart before you begin
• Ordering provider – select the correct provider from the EHR list; never guess
• Test name and code – most EHR systems use standardized test codes (often linked to LOINC codes) to communicate with the laboratory; select the exact test ordered, for example "CBC with differential" versus "CBC without differential"
• Specimen source – specify whether the sample is venous blood, capillary blood, urine, throat swab, and so on; the lab needs this to process the specimen correctly
• Date and time ordered
• Priority – routine versus STAT (immediate)
• Any special instructions – for example, fasting required

Always compare your completed entry back to the provider's original written order before submitting. If anything is unclear, ask the provider before you proceed—never assume.

Receiving and Filing Laboratory Results

Results return to the practice electronically or on paper. Either way, your responsibilities are the same:

1. Match results to the correct patient and order – confirm patient name, date of birth, and the specific test ordered.

2. Enter or verify values in the EHR results module – when results arrive on paper and must be manually entered, key each value exactly as printed; do not round or interpret.

3. Apply reference range flags – EHR systems compare each result to built-in reference ranges and display flags such as "L" (low), "H" (high), or "CR" (critical). Confirm that the flags appear correctly. If a value falls outside the reference range and no flag appears, alert your supervisor; the reference ranges in the system may need review.

4. Route results to the provider – use the EHR's messaging or task function to notify the ordering provider that results are available for review.

5. Document that results were received and routed – the chart must show a clear audit trail.

Never file a result in the wrong chart. A misfiled result can lead to incorrect treatment of two different patients.

Understanding Critical Values

A critical value (also called a panic value) is a laboratory result so far outside the normal range that it may represent an immediate, life-threatening condition. Examples include a serum potassium that is dangerously high or low, a glucose level indicating severe hypoglycemia or hyperosmolar crisis, or a hemoglobin indicating acute severe anemia. Reference laboratories and hospital labs publish their own critical value lists; your office will have a written critical value protocol.

When you see a critical value, you must act immediately. Waiting to batch this notification with other tasks is never acceptable.

Critical Value Reporting Protocol

Most office protocols follow a sequence like this:

1. Recognize the critical flag in the EHR or on the printed report.

2. Contact the ordering provider immediately – by phone or in person, depending on office policy. Do not use low-priority messaging for a critical value.

3. Read back – state the patient name, the test name, and the critical value; the provider repeats it back to confirm accuracy. This read-back step is required by patient safety standards.

4. Document in the EHR communication log – record:

• Patient name and date of birth
• Test name and the specific critical value
• Date and exact time of notification
• Name of the provider notified
• Method of contact (phone, in-person)
• Read-back confirmation (note that provider repeated the value back)
• Your name and credential

5. Follow up – confirm the provider has reviewed the full result and documented any orders or plan.

Time-stamping is not optional. If there is ever a question about when notification occurred, the timestamp in the EHR log is the legal record.

Scope of Practice Reminder

As a medical assistant, you identify and report critical values—you do not interpret them clinically or advise the patient on what the value means without provider direction. Your role is prompt, accurate communication. The provider decides what to do next. Never delay notification while waiting to understand the clinical significance yourself.

Safety Points

• Always verify patient identity before entering any order or filing any result.
• Never alter a laboratory value when entering it manually; enter exactly what the report states.
• Never delay critical value notification for any reason.
• Document every step of the critical value process in real time, not from memory later.
• If you cannot reach the ordering provider, follow your office's escalation protocol (notify another licensed provider or supervisor); document each attempt and the outcome.