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Pelvic Angle (Cranial Cephalic) in Serum/Plasma via Electrophoresis

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

This test measures the angle formed between the pelvis and the cephalic (head) region using serum or plasma, often assessed via electrophoresis. It may relate to fluid distribution or protein electrophoresis patterns.

Quick summary

["Understanding your pelvic angle can help assess fluid balance or protein separation in blood samples."]

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

Key facts at a glance

LOINC
37634-3
Short code
XR Pelvis AP 20 deg ceph angle
Synonyms
XR Pelvis AP 20 deg ceph angle
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
xr
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 This Test Measures

The pelvic angle in this test is derived from analyzing the separation of substances in serum or plasma during electrophoresis. This process helps visualize how different components (such as proteins) distribute spatially within the sample. The angle itself may reflect the relative positioning of these components, potentially indicating shifts in fluid or protein concentration.

Why It Might Be Ordered

Your healthcare provider may order this test if they suspect abnormalities in fluid distribution, protein electrophoresis patterns, or conditions affecting the cephalic-pelvic axis in blood chemistry. It could be part of broader evaluations for metabolic, inflammatory, or genetic conditions.

Common Conditions or Contexts

While less common, this test could be relevant in cases involving hereditary or metabolic disorders affecting protein electrophoresis, such as certain genetic protein disorders or fluid imbalance conditions. It may also be used in research or specialized diagnostic contexts.

Sample Preparation and Collection

For this test, a blood sample is drawn into a tube that separates serum or plasma from blood cells. The sample is then processed using electrophoresis, a technique that separates substances based on size, charge, or other properties. Avoiding food or certain medications for a specified period before testing may be advised, depending on clinical context.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Pelvic angle measurements in electrophoresis are primarily used in specialized research or diagnostic contexts to assess protein distribution patterns. Abnormal angles may indicate underlying metabolic, genetic, or inflammatory conditions affecting protein separation. This test is not routinely used in standard clinical practice but may be part of advanced diagnostic workflows for specific conditions.

Short name

Pelvic Angle Test

Frequently asked questions

What does this test involve?
This test involves analyzing the angle formed during electrophoresis of serum or plasma to study how substances separate spatially. It’s typically done in a lab setting and may require fasting or specific dietary restrictions depending on the clinical reason for testing.
How long does it take to get results?
Results for this test are generally available within 1 to 3 business days, depending on lab processing times and clinical urgency. Follow-up with your healthcare provider for interpretation.
Can I eat or drink before this test?
Dietary restrictions may vary based on the clinical reason for testing. Typically, fasting for 8–12 hours before blood draw is common for many tests, but confirm with your provider for specific instructions related to this test.
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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