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Lactic Acid Concentration in Serum or Plasma by Titration Method

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

This test measures the amount of lactic acid in your blood, which can help assess how well your body is handling energy production and oxygen use.

Quick summary

["Lactic acid levels may rise in conditions affecting metabolism or oxygen supply."]

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

Key facts at a glance

LOINC
24284-2
Short code
LACV Ab sp2 Titr Ser
Synonyms
LACV Ab sp2 Titr Ser
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like shortness of breath, fatigue, or muscle pain, especially after exercise or illness. It could also be used to monitor conditions like heart disease, kidney problems, or metabolic disorders.

When to Expect Results

Results are typically available within 24 to 48 hours, depending on your lab’s processing schedule. Your provider will discuss them with you during your follow-up visit.

What to Expect During the Test

A blood sample is drawn from a vein, usually in your arm. You may feel a slight pinch, but it’s usually over quickly. No special preparation is needed unless instructed otherwise.

Common Causes of Elevated Levels

High lactic acid levels can occur due to conditions like severe anemia, heart or lung disease, dehydration, or certain medications. Exercise or intense physical activity can also temporarily raise levels.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated lactic acid levels often signal poor oxygen delivery to tissues, which can be linked to conditions like heart failure, shock, or metabolic disorders. Low levels may indicate overproduction of lactic acid in rare metabolic conditions.

Short name

Lactic Acid (Serum/Plasma)

Frequently asked questions

How often should I get this test?
Your provider will determine the frequency based on your health condition, symptoms, and treatment plan. Regular monitoring may be needed if you have chronic illnesses like heart disease or kidney problems.
What does a normal result mean?
A normal result doesn’t mean your body is functioning perfectly—it simply indicates that your lactic acid levels are within the expected range for healthy individuals. Your provider will interpret results in relation to your overall health.
Can lifestyle changes affect this test?
Yes, factors like intense exercise, dehydration, or certain medications can temporarily alter lactic acid levels. Avoiding strenuous activity for 24 hours before testing may help get a more accurate baseline result.
  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