Hypercalcemia Average Cost

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What is Hypercalcemia?

Calcium is essential for blood clotting, cardiovascular, neuromuscular, immune and endocrine function.  Bones need calcium to keep them healthy and strong. If the bones lose too much calcium because it is going instead into the bloodstream, they will become weak. The bones of the canine will be more susceptible to bone fractures. 

Calcium levels are controlled and monitored by the parathyroid glands. The parathyroid hormones and vitamin D interact to release calcium from the bones, stomach, and kidneys, which is then transferred to the canine’s bloodstream.

High levels of calcium in your canine’s bloodstream can be toxic to all of his body tissues. Hypercalcemia will also be harmful to the kidneys, nervous and cardiovascular system.  High calcium levels may also bring on gastrointestinal problems, acute renal failure, coma, and even death if not treated.

If you notice that your dog is not himself and is experiencing any of the symptoms for hypercalcemia, please take your pet to the veterinarian.  The longer high calcium levels in the bloodstream are left untreated, the more damage it is causing to your pet’s health.

Hypercalcemia in dogs means that the level of calcium in the canine’s bloodstream is abnormally high. High calcium levels can be a secondary symptom associated with serious diseases such as Addison’s disease, kidney failure, parathyroid gland tumor and cancer.

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Symptoms of Hypercalcemia in Dogs

Symptoms of hypercalcemia may include one or more of the following signs:

  • Dehydration
  • Excess thirst
  • Frequent urination
  • Loss of appetite
  • Weakness
  • Formation of bladder or kidney stones
  • Vomiting 
  • Weight loss
  • Constipation
  • Swelling of the lymph nodes

Causes of Hypercalcemia in Dogs

  • Canine lymphoma 
  • Anal gland cancer
  • Addison’s disease
  • Kidney failure
  • Exposure to too much vitamin D (can be found in plants, poisons or topical ointments)
  • Dehydration
  • Hypercalcemia may be a side effect of certain medications, alkaline antacids, long-term use of diuretics, estrogens, and progesterone 
  • Anemia

Diagnosis of Hypercalcemia in Dogs

The veterinarian will ask for a thorough medical history on your dog.  He will ask you when the symptoms you have observed commenced. Let your veterinarian know if your pet is on any supplements or medicines.  The physical examination may include palpation of the lymph nodes and abdomen.  He may also check your canine’s anal sacs to search for masses; one of the causes of hypercalcemia is cancer of the anal sac glands. Diagnostic tests that your veterinarian may recommend:

  • Bloodwork (serum biochemistry profile and complete blood count)
  • Urine sample to show if there is damage to the kidneys
  • Parathyroid hormone test (PTH)  
  • Thoracic and abdominal x-rays can show the presence of a mass
  • An ultrasound of the parathyroid will evaluate the shape and size of the parathyroid glands 
  • An ACTH stimulation test will exclude Addison’s disease in your dog 
  • Blood ionized calcium concentration to assess the biologically active form of calcium

Treatment of Hypercalcemia in Dogs

The treatment for hypercalcemia depends on what information the physical, blood work, and diagnostic test revealed.  If your veterinarian determines that your pet is dehydrated, it will be necessary to rehydrate him by administering fluids by intravenous or subcutaneously (under the skin). If the blood concentration is very high in the bloodstream, your veterinarian team may recommend hospitalization in order to start drug treatment. If your pet is diagnosed with cancer, surgery and chemotherapy may necessary.  

Loop diuretics such as furosemide can increase calcium excretion by the kidneys. Diphosphonates may be prescribed to minimize the bone release of calcium.  Glucocorticoids such as dexamethasone or prednisone may be administered if there is no adequate response to IV fluids with furosemide.  Prednisone and other corticosteroids can reduce calcium absorption. Long term control of hypercalcemia may include drugs such as bisphosphonate, mithramycin, or calcitonin.

Recovery of Hypercalcemia in Dogs

Canines that undergo surgery will receive post-operative instructions from the surgeon.  Your dog will be given pain medication, and it will be very important to limit your pet’s activity, usually for 3 weeks after surgery. If you notice twitching muscles, dilated pupils, weakness or seizures, please call your veterinarian. If the biopsy taken during surgery revealed cancer the surgeon may recommend ongoing low-dose chemotherapy, called metronomic therapy, to keep the cancer in check. It is very important to follow the treatment plan that your veterinarian team has recommended for your companion.

Hypercalcemia Questions and Advice from Veterinary Professionals

Labrador Retriever
12 Weeks
Serious condition
0 found helpful
Serious condition

Has Symptoms


Our happy bouncy puppy went to the vets on Monday for her 12 week vaccination (Nobivac)
She was quiet when we brought her home and sleepy which we were told may happen.
During Monday night she was sick when we got her out of her crate on Tuesday morning she urinated everywhere. We took her to the vet and was told she had lost weight her heart rate was high and she was just not herself. She stayed at the vets all day on a drip and we picked her up at 9pm that evening as she had ‘perked’ up. Wednesday morning she was sick with bile and was shaking and lethargic and not eating. We took her act tomthe vets, heart rate back up list weight again and they kept her in. They reported later that day that she hadn’t eaten a test had shown her calcium very high, dehydrated, a scan/X-ray showed swollen lymph glands and possible pancreatitis? the vet asked if she had eaten anything but she definitely hadn’t. Tests have been done for cancer and we are waiting the results and lung worm both negative, other blood tests have come back negative. The vets have worked hard but are puzzled.
I cannot understand how she went into the vet a happy healthy puppy, I have asked the vet if this could be a reaction to the vaccination, they have said it’s possible but very rare?

Dr. Michele King, DVM
Dr. Michele King, DVM
502 Recommendations
Thank you for your email. Without examining Ottie or knowing more about her lab work, I have a hard time commenting on what might be going on. I can't imagine that what is happening with her was a result of a vaccination, and I'm very sorry that she seems to be having so many problems. Cancer is so rare in puppies. She may just need supportive care until she recovers from what is happening to her - I hope that your veterinarians are able to figure out what is happening with her and that she recovers.

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8 Years
Mild condition
0 found helpful
Mild condition

Has Symptoms

Loss of hair, thirsty, increased ap

Our German Wire Haired pointer has. Non cancerous growrh on his parathyroid causing hypercalcemia. He has been on 90 mg of biphosphonate,75mg Zantac and 25mg prednisone daily for 5 months. Can we discontinue the prednisone? concerned about side effects, but we want him to be comfortable.

Dr. Michele King, DVM
Dr. Michele King, DVM
502 Recommendations
Thank you for your question. If Gus is suffering from the side effects of Prednisone, you may be able to decrease the dosage, but that would be a great question for your veterinarian, as they know all of Gus's history, labwork and are able to examine him. Without knowing any of his history, I can't recommend any changes in prescriptions. I hope that he does well.

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Jack Russell
2 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Wants to sleep a lot more

Medication Used

Calcium syrup

Hi ive got a jack russel x foxie female 2 years of age, she has been to the vets and they diagnosed her with having hypercalcemia, and told me to treat her with a calcium suppliment and i do, but is there a chance the treatment can become less effective the longer she has it?

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2001 Recommendations

Hypercalcemia is an increase in calcium in the blood and hypocalcemia is a decrease of calcium in the blood. Calcium supplementation is a symptomatic treatment, but doesn’t get down to the underlying cause of the decrease in calcium levels; parathyroid gland disorders, kidney failure, low vitamin d levels, low calcium intake and other causes may cause a decrease in calcium levels. Regards Dr Callum Turner DVM

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