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24-Hour Calcium Intake Protocol (Qualitative Assessment)

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

This test evaluates your total calcium intake over a 24-hour period by analyzing dietary records and, if applicable, blood or urine samples for metabolic markers.

Quick summary

["Understanding your calcium intake helps identify dietary habits or deficiencies that may affect bone health or other bodily functions."]

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

Key facts at a glance

LOINC
62289-4
Short code
PhenX - calcium intake - adult protocol
Synonyms
PhenX - calcium intake - adult protocol
Category
electrolyte
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
8.5
Ref high
10.5
Critical range
6 N/A – 14 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
phenx
CPT
82310
SNOMED
110744001
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 test combines a dietary assessment (24-hour calcium intake record) with optional blood or urine tests to measure how your body processes calcium. It may include qualitative analysis of calcium absorption markers or metabolic byproducts, depending on the protocol.

Why It’s Done

Your healthcare provider may recommend this test if you have symptoms like muscle weakness, bone pain, or if you’re at risk for calcium-related conditions (e.g., osteoporosis, kidney stones). It helps determine whether dietary habits or absorption issues are contributing to your health concerns.

Sample Collection Process

For the dietary portion, you’ll track all calcium-containing foods and beverages you consume over 24 hours, including supplements. For metabolic markers (if included), a blood or urine sample may be taken at a specific time (e.g., fasting or post-meal).

Preparation and Timing

Follow your provider’s instructions carefully. For dietary records, keep a detailed log of everything you eat/drink. If blood/urine samples are part of the protocol, avoid certain foods/drinks (e.g., calcium-rich meals) for 12–24 hours beforehand to ensure accuracy.

Reference range

Adult: 8.5-10.5 mg/dLN/A

Specimen: serum

No special preparation required. Stay well hydrated.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Frequently asked questions

What Does a Positive or Abnormal Result Mean?
An abnormal result may indicate either excessive calcium intake (e.g., from supplements or high dairy consumption) or inadequate absorption. Your provider will discuss findings in the context of your symptoms and medical history to guide next steps.
How Often Should I Get This Test?
This test is typically ordered as part of a specific evaluation (e.g., for bone health, kidney function, or dietary counseling). Follow-up may depend on your provider’s recommendations, such as retesting if symptoms persist or if dietary changes are made.
Can I Adjust My Diet Before the Test?
Yes, but only if instructed by your provider. Avoid drastic changes (e.g., eliminating calcium entirely) unless advised, as this may skew results. Stick to your usual eating habits unless specified 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