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Health Care Visit 14 Days Prior to Symptom Onset

Published: August 9, 2026Updated: August 17, 2026

This records whether and when a healthcare visit occurred during the 14 days before symptoms began. It is a clinical history item rather than a laboratory measurement.

Quick summary

["This item documents the timing of medical care before symptoms appeared."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
96543-4
Short code
Visit healthcare fac 14D prior to symp
Synonyms
Visit healthcare fac 14D prior to symp
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
7
Ref high
56
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
84484
SNOMED
302773008
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

This item records whether a healthcare visit occurred within the 14 days before the onset of symptoms. It is part of the medical or exposure history and is not a blood, urine, or other laboratory test.

Why might I need this test?

A clinician may use this information to understand the sequence of events surrounding an illness, such as whether symptoms were already present when medical care was sought. It may also support an investigation of possible exposures.

How is the test performed?

There is no specimen collection or laboratory analysis. The information is usually obtained by reviewing medical records or asking about dates of healthcare visits and symptom onset.

How do I prepare for the test?

No laboratory preparation is needed. If possible, have the dates of the healthcare visit and when your symptoms began available so the timeline can be recorded accurately.

Reference range

Adult males: 7-56 U/L; Adult females: 7-43 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This item is not interpreted as a normal or abnormal laboratory result. The information helps place medical visits and symptom onset in chronological order, which may clarify the course of an illness or the timing of a possible exposure.

Short name

Healthcare Visit Before Symptom Onset

Frequently asked questions

Is this a laboratory blood test?
No. It is a clinical history item documenting the timing of a healthcare visit before symptoms began.
Do I need to have any laboratory preparation?
No. There is no specimen collection, fasting requirement, or medication restriction for this item.
What should I bring to the appointment?
Bring the date of the visit and the date your symptoms started, if you know them. Appointment records or other relevant medical information may also be helpful.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 17, 2026. · Read our editorial policy