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Whole Blood Laboratory Test (Analyte and Method Not Identified)

Published: August 9, 2026Updated: August 16, 2026

This code appears to refer to a whole blood test, but it does not reliably identify the specific analyte or testing method. The test name on your laboratory report should be used for interpretation.

Quick summary

["The code indicates a whole blood sample, but the laboratory report is needed to identify the exact test."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
78038-7
Short code
CTA T+A.Ao+RO v-Bl W contr IV
Synonyms
CTA T+A.Ao+RO v-Bl W contr IV
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ct-angio
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 order appears to involve testing a sample of whole blood. The abbreviated code does not clearly identify the substance being measured or the laboratory method, so the exact test cannot be determined from the code alone.

Why might I need this test?

Whole blood tests can be used to evaluate blood cells, clotting, blood gases, glucose, or other blood components. The reason for your test depends on the specific analyte ordered by your clinician and your symptoms or medical history.

How is the test performed?

A healthcare professional usually collects whole blood from a vein, though some tests use a finger or heel stick. Because some whole blood tests require prompt analysis, the sample may be tested immediately in a blood gas analyzer or another laboratory instrument.

How do I prepare for the test?

Follow the preparation instructions provided with your order. Some whole blood tests require fasting, while others do not, and you should not stop medications or change your diet unless your healthcare professional tells you to do so.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Whole blood test

Frequently asked questions

How can I determine the exact name of this test?
Check the test name printed on your laboratory report or contact the ordering clinician or laboratory. The abbreviated code provided here does not reliably identify the analyte.
Do I need to fast for a whole blood test?
It depends on the specific test. Some tests require fasting, while many do not, so follow any instructions given with your order.
What does an abnormal result mean?
An abnormal finding may reflect an illness, medication effect, or another factor, but its meaning depends on the exact analyte and your clinical situation. Your healthcare professional can interpret the result in the appropriate context.
  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 16, 2026. · Read our editorial policy