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Calciumdiafpmcnc

Published: July 31, 2026Updated: August 16, 2026

This test measures the amount of calcium in the fluid used for peritoneal dialysis, helping doctors monitor mineral balance in patients with kidney failure.

Quick summary

{"Peritoneal dialysis uses a special fluid to filter waste from the blood through the abdomen","Calcium levels in dialysis fluid help maintain proper bone and heart function","Regular monitoring prevents complications like bone disease and heart rhythm problems","Abnormal results may indicate need for dietary changes or medication adjustments","The test is part of routine care for patients on peritoneal dialysis"}

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

Key facts at a glance

LOINC
58781-6
Short code
Ca-PDF
Synonyms
Calcium DiafP-mCnc
Category
electrolyte
Sample
serum
Container
Sterile collection container for peritoneal dialysis fluid
Units
not specified
Ref low
2.5
Ref high
4.5
Critical range
2 not specified – 6 not specified
Fasting
false
Population
adult
Sex
all
Age range
≥ 18 years
Method
Atomic absorption spectroscopy (AAS) or Ion-selective electrode (ISE)
CPT
82310
SNOMED
302497006
Specimen volume
Minimum 5-10 mL of peritoneal dialysis effluent
Stability
Room temperature: 24 hours; Refrigerated (2-8°C): 72 hours; Frozen (-20°C): 2 weeks for batch analysis
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

The Calcium in Peritoneal Dialysis Fluid test measures how much calcium is present in the dialysis solution used during peritoneal dialysis. Peritoneal dialysis is a treatment for kidney failure where a cleansing fluid is placed into the abdomen to filter waste from the blood. Calcium is an essential mineral that helps maintain strong bones, supports muscle function, and regulates heart rhythm. When kidneys fail, they can no longer properly balance calcium levels in the body, making regular monitoring crucial for patients undergoing dialysis.

How is the test performed?

During your peritoneal dialysis session, a sample of the dialysis fluid (called dialysate) is collected before or after it has been in your abdomen. This sample is sent to a laboratory where the calcium concentration is measured. The test is typically part of routine monthly blood work and dialysis fluid analysis. Your healthcare team will use these results to determine if your dialysis solution needs to be adjusted or if you require calcium supplements or dietary changes.

Reference range

Not establishednot specified

Specimen: serum

No special preparation required; collect drained peritoneal dialysis fluid as directed

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Why is calcium monitoring important during peritoneal dialysis?
When kidneys fail, they can no longer properly regulate calcium and phosphorus balance. This can lead to bone weakening, heart problems, and other complications. Peritoneal dialysis fluid calcium levels help your healthcare team adjust treatment to maintain healthy mineral balance.
What happens if my calcium level is too low?
Low calcium may require your doctor to increase the calcium concentration in your dialysis fluid, prescribe calcium supplements, or recommend calcium-rich foods. Symptoms of low calcium include muscle cramps, tingling in fingers, and fatigue.
What happens if my calcium level is too high?
High calcium may indicate that your dialysis fluid has too much calcium, or that your body is releasing too much calcium from your bones. Your treatment team may lower the calcium in your dialysis solution or adjust your medications.
How often should this test be done?
Calcium levels are typically checked monthly as part of routine dialysis monitoring. Your doctor may order more frequent tests if you have abnormal results or are experiencing symptoms.
Do I need to fast before this test?
No fasting is typically required for this test since it measures calcium in dialysis fluid, not blood. However, always follow your healthcare provider's specific instructions.
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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