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Serum or Plasma Substance Concentration (Qualitative) for Skull-related Biomarker (e.g., potential biomarker for bone or metabolic assessment)

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

This test measures a specific substance in your blood that may relate to bone health or metabolic processes. Results are qualitative (qualitative assessment rather than a numeric value).

Quick summary

["This test helps assess certain biochemical markers indirectly tied to bone or metabolic function."]

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

Key facts at a glance

LOINC
60613-7
Short code
U1-L1 Skull XR
Synonyms
U1-L1 Skull XR
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-measured
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

This test evaluates the presence or absence of a particular substance in your serum or plasma. The substance could be associated with bone metabolism, mineral balance, or other metabolic pathways. The result is not a direct measurement but rather a qualitative indication of its presence or absence, which may be used to guide further evaluation if needed.

Why It Might Be Ordered

Your healthcare provider may order this test if they suspect an underlying condition affecting bone health, metabolic function, or other systemic processes. It could be part of a broader evaluation for conditions like osteoporosis, metabolic disorders, or other clinical scenarios where specific biomarkers are relevant.

What to Expect Before the Test

No special preparation is typically required for this test. You may have a simple blood draw, similar to other routine blood tests. If you are on certain medications or have specific health conditions, inform your healthcare provider beforehand.

What to Expect During the Test

The test involves drawing a small amount of blood from a vein in your arm. It usually takes a few minutes. You may feel a slight pinch, but the process is generally quick and well-tolerated.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

While this test does not provide a direct numeric result, the qualitative assessment can help identify potential abnormalities in biochemical pathways related to bone metabolism or metabolic health. It may be used as a screening or confirmatory tool in conjunction with clinical findings, patient history, and other diagnostic tests. Further evaluation by your healthcare provider will determine the next steps based on your specific situation.

Frequently asked questions

What does a positive or negative result mean?
A positive result indicates the presence of the substance being tested, which may suggest an underlying condition related to bone metabolism or metabolic processes. A negative result means the substance was not detected, which may indicate normal levels or absence of the marker. Your healthcare provider will interpret the result in the context of your overall health and medical history.
How often should I get this test?
The frequency of this test depends entirely on your healthcare provider’s recommendations. They will determine how often you need testing based on your clinical needs, symptoms, or other factors.
Can I eat or drink before this test?
No specific dietary restrictions apply to this test. You can eat and drink normally before having your blood drawn, unless your healthcare provider advises otherwise.
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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