How Often Does Your Dog Need Bloodwork While on Long-Term Steroids?

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-14

Key Takeaways

• Long-term steroid therapy in dogs necessitates regular bloodwork, typically every 3 to 6 months after initial dose stabilization, to monitor for subclinical organ system changes.
• Steroids can induce silent alterations in liver enzymes, kidney function, and glucose metabolism, potentially leading to conditions like steroid-induced diabetes or liver strain, which are detectable via complete blood counts and biochemistry profiles.
• Routine urine analysis is crucial as steroids can increase the risk of urinary tract infections and protein loss through the kidneys.
• Abrupt cessation of long-term steroids is contraindicated due to the risk of adrenal insufficiency and withdrawal syndrome; dose adjustments must be managed by a veterinarian.
• Owners must meticulously record and report clinical signs such as increased thirst, urination, appetite, lethargy, vomiting, or diarrhea, as these can indicate steroid toxicity or serious complications requiring immediate veterinary intervention.
• Baseline bloodwork, urine tests, and blood pressure measurements are essential before initiating steroid therapy to establish normal parameters and identify pre-existing conditions.

If your dog is starting long-term steroids, such as prednisone, plan on bloodwork every 3 to 6 months for as long as the medication continues. Many veterinarians recommend a check at 1 to 2 months after the starting dose is set, then every 3 to 6 months after that. The exact schedule depends on your dog's dose, age, and other health conditions, so your veterinarian will set the timeline for your specific dog.

Bloodwork is not a formality. Steroids change how the liver, kidneys, and immune system work, and those changes can happen without any visible signs. A blood test can catch a problem weeks or months before your dog acts sick. That early warning is the whole point of monitoring.

Do not stop or reduce the steroid dose on your own if a test result looks unusual. Sudden steroid withdrawal can be dangerous. Your veterinarian will adjust the dose slowly and safely based on the bloodwork results.

Is This an Emergency?

Most dogs on steroids do not have an emergency. But steroids can cause serious complications, and some of them come on fast. Use this table to decide what to do.

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 "title": "Urgency triage by severity of signs",
 "tiers": [
  {
   "tier": "danger",
   "label": "Go to an emergency vet now",
   "signs": [
    "Collapse, seizures, difficulty breathing, vomiting blood, black or tarry stool, sudden severe weakness, or a swollen painful abdomen"
   ],
   "action": [
    "Do not wait for an appointment",
    "These signs can mean internal bleeding, a perforated stomach ulcer, or a dangerous reaction",
    "Go immediately"
   ]
  },
  {
   "tier": "warn",
   "label": "Book a same-day appointment",
   "signs": [
    "Repeated vomiting, diarrhea lasting more than 24 hours, drinking and urinating far more than usual, extreme lethargy, or refusing food for more than a day"
   ],
   "action": [
    "Call your regular vet first thing",
    "These signs can indicate steroid side effects that need a dose change or additional treatment"
   ]
  },
  {
   "tier": "safe",
   "label": "Watch at home for 48 hours",
   "signs": [
    "Mild increase in thirst, slightly hungrier than normal, mild panting, or a small increase in urination"
   ],
   "action": [
    "These are common steroid effects",
    "Track how often your dog drinks and urinates",
    "If they worsen or do not settle in 2 days, call your vet"
   ]
  }
 ]
}

If you are ever unsure, call your veterinary clinic. They know your dog's history and can tell you whether a sign needs urgent attention.

What Is Most Likely Going On

Steroids are powerful anti-inflammatory drugs. They are prescribed for conditions like allergies, autoimmune disease, inflammatory bowel disease, and certain cancers. When used long term, they suppress the immune system and alter how the body processes sugar, protein, and minerals.

The most common steroid side effects are increased thirst, increased urination, and a bigger appetite. These are expected and usually manageable. The bloodwork is looking for the less obvious effects, such as changes in liver enzymes, blood sugar, and protein levels. Liver enzymes are proteins that help the liver do its work, and high levels can signal liver strain.

Steroids can also raise blood pressure and increase the risk of blood clots. They can weaken the immune system, which means a routine infection can become serious quickly. The FDA's guidance on safe use of pet medications explains why careful dosing and monitoring matter so much with these drugs.

What Blood Tests Are Done and Why

A typical monitoring panel includes a complete blood count and a biochemistry profile. A complete blood count measures red blood cells, white blood cells, and platelets. Platelets help blood clot. Steroids can raise the white blood cell count, which is often a normal response, but it can also mask an infection.

The biochemistry profile checks liver enzymes, kidney values, blood sugar, and protein levels. Steroids can cause the liver to produce more enzymes, and they can push blood sugar higher. Over time, some dogs develop steroid-induced diabetes, where the body cannot control blood sugar properly.

Your veterinarian may also check urine. Urine tests look for protein loss and signs of a urinary tract infection, which steroids make more likely. The American Veterinary Medical Association's pet owner resources describe how routine testing fits into a broader preventive care plan for dogs on chronic medication.

What Else Could Be Going On

Bloodwork results that look abnormal do not always mean the steroids are causing harm. Some changes are expected and harmless. For example, a mild rise in liver enzymes is common and often does not require any action.

Other changes need attention. A high blood sugar reading may mean your dog is developing diabetes. Low protein levels can indicate the kidneys are leaking protein, which steroids can worsen. A drop in red blood cells could point to bleeding in the stomach or intestines, which is a serious steroid complication.

Your veterinarian will interpret the results in context. They will compare the new numbers to your dog's previous results and to the reason your dog is on steroids in the first place. A single odd value is rarely a reason to panic. A pattern across several tests is more meaningful.

How to Prepare for Each Bloodwork Visit

Bloodwork usually requires a 12 hour fast, meaning no food but water is allowed. Your veterinarian will tell you whether fasting is needed for your dog. Some steroid protocols do not require fasting, so follow the specific instructions you are given.

Bring a list of every medication your dog takes, including supplements and any over the counter products. Steroids interact with many drugs, and your veterinarian needs the full picture. The MSD Veterinary Manual for pet owners notes that drug interactions are a common reason for unexpected bloodwork changes.

Write down any changes you have noticed at home, such as how much your dog drinks in a day or whether they seem more tired. Your observations help your veterinarian decide whether a bloodwork change matters. A dog who drinks twice as much as usual and has a high blood sugar reading is a different situation than a dog with the same reading and no symptoms.

What the Results Mean for Your Dog's Treatment

Normal bloodwork means the current dose is working without obvious harm. Your veterinarian will likely continue the same dose and schedule the next check in 3 to 6 months.

Mild abnormalities often lead to a dose reduction. Your veterinarian may lower the steroid slowly and then repeat the bloodwork in a few weeks to see if the values improve. This is common and does not mean the treatment is failing.

More serious changes, such as diabetes or significant liver strain, may require adding another medication or switching to a different steroid. Your veterinarian will guide this process. Never adjust the dose yourself, because the FDA warns that dosing errors with pet medications are a leading cause of treatment problems.

The American Animal Hospital Association's pet owner guidance emphasizes that regular checkups and testing are part of responsible long term care. Bloodwork every few months is a small price for catching a serious problem early.

What You Can Safely Do at Home Right Now

If your dog is already on long-term steroids, you do not need to panic. Most dogs on this medication are stable and simply need routine monitoring. Your job at home is to observe, record, and report.

Write down these things before you call or visit your veterinarian:

• Your dog's weight, if you can weigh them at home. Use the same scale each time.
• How much water your dog drinks in 24 hours. Fill a bowl to a marked line and measure what you add.
• How often your dog urinates and whether accidents happen indoors.
• Your dog's appetite. Note if it has increased, decreased, or stayed the same.
• Any vomiting, diarrhea, or changes in stool color or consistency.
• Your dog's energy level. Compare it to their normal behavior.
• Any coughing, especially at night or after exercise.
• Any new lumps, hair loss, thinning skin, or changes to the coat.
• Any stiffness, limping, or trouble getting up.

Do not stop the steroid suddenly. Abruptly stopping long-term steroids can cause a serious withdrawal reaction, including weakness, collapse, or a return of the original disease. If you are worried about side effects, call your veterinarian first. They will tell you whether to adjust the dose or taper it down gradually. Never change the dose on your own.

Do not give your dog any over-the-counter human medication, including antacids or pain relievers. Some of these are dangerous for dogs, and others can interact badly with steroids. The US Food and Drug Administration warns that giving pets human medicine without veterinary guidance is a common cause of dosing errors and harm. Let your veterinarian choose any additional medication.

Monitoring Schedule Table

The exact schedule depends on your dog's condition, the steroid dose, and how long they have been on it. This table shows a typical plan for a dog on long-term treatment. Your veterinarian may adjust it.

Some dogs need more frequent checks. Dogs on very high doses, dogs with kidney or liver disease, and older dogs may need bloodwork every 4 to 8 weeks. Dogs on a low, stable dose for years may only need checks twice a year.

What a Veterinary Visit Usually Involves

Your veterinarian will start by asking about the things you wrote down at home. Expect questions about thirst, urination, appetite, energy, and any new symptoms. They will examine your dog from nose to tail, including feeling the abdomen and listening to the heart and lungs.

The tests commonly considered are:

• A complete blood count, which checks red cells, white cells, and platelets.
• A biochemistry panel, which checks liver enzymes, kidney values, blood sugar, and protein levels.
• A urine test, which checks for infection, sugar, or protein.
• Blood pressure measurement, because steroids can raise blood pressure.
• Sometimes a test for Cushing's disease, if your dog develops a pot-bellied appearance, hair loss, or excessive thirst.

The cost of these visits varies widely by region and clinic. A basic blood panel might cost anywhere from $50 to $150. A full panel with urine and blood pressure could run from $150 to $400. These are general ranges, not quotes. Prices depend on your location, the clinic, and whether any extra tests are needed. Ask your clinic for an estimate before the visit.

When an Online Vet Can Help, and When It Cannot

Some situations in this article require hands-on care and must not be handled remotely. If your dog is vomiting repeatedly, has bloody diarrhea, collapses, has trouble breathing, or cannot urinate, that is an emergency. Do not use a video call. Take your dog to an emergency clinic immediately. The same applies if your dog has a seizure or if you suspect they got into a medication bottle and took too much.

A remote consultation is genuinely useful for other situations. If your dog has mild increased thirst that started last week, or you are unsure whether a new symptom warrants a visit, an online veterinarian can help you decide. They can also answer questions about side effects, explain what a bloodwork result means, or help you prepare for an upcoming in-person appointment. For a stable dog on long-term steroids, a remote check can be a convenient way to review progress between visits.

A remote veterinarian can take a history, look at visible signs on video, and give advice. In many states, they can prescribe medication. But they cannot palpate the abdomen, listen to the chest, take a temperature, run bloodwork, or image anything. Those require an in-person visit. Prescribing rules differ by state, and a veterinarian may require an in-person examination before prescribing or refilling a steroid. The American Veterinary Medical Association advises that a valid veterinarian-client-patient relationship, which often includes an in-person exam, is the foundation of safe prescribing.

Use remote care as a triage tool, not a replacement for your regular veterinarian. When in doubt, book the in-person visit.

Common Mistakes Owners Make With Steroid Monitoring

Many owners mean well but fall into predictable traps. The most common mistake is stopping bloodwork once the dog seems better. Steroids can cause silent changes in the body, especially in the liver and adrenal glands. A dog can look bright and energetic while blood values drift into dangerous territory.

Another frequent error is skipping doses before a blood test. Some owners worry that the medication will skew results, so they hold a dose. This is unsafe. The veterinarian needs to see the true effect of the dose your dog actually receives. Missing a dose can also trigger withdrawal signs. Give the medication exactly as prescribed and tell the vet if you have any concerns.

A third mistake is comparing bloodwork to results from months or years ago without context. Steroid effects can change over time. Your dog's weight, other medications, and underlying disease all shift the picture. Let your veterinarian interpret each set of results against the current plan.

Finally, some owners hide problems out of fear that the vet will stop the steroid. Be honest about vomiting, increased thirst, or behavior changes. These signs help the vet adjust the dose safely. Hiding them can lead to a more serious problem later.

How to Reduce the Chance of Problems Returning

The best way to prevent steroid complications is to follow the monitoring schedule your veterinarian sets. Most dogs on long-term steroids need bloodwork every 3 to 6 months once the dose is stable. Early in treatment, testing may happen more often, sometimes every 2 to 4 weeks. The exact timing depends on the drug, the dose, and the disease being treated.

Keep a simple calendar or phone reminder for each bloodwork date. Write down any changes you notice at home, such as increased drinking, more urination, or a duller coat. Bring that list to every appointment. The American Veterinary Medical Association advises owners to keep an open line of communication with their veterinary team about any medication concerns.

Do not change the dose on your own. Steroids must be tapered gradually, never stopped suddenly. Sudden withdrawal can cause a life-threatening drop in cortisol, a hormone the adrenal glands produce. The FDA's guidance on safe use of pet medications stresses giving medicines exactly as directed and asking the vet before making any changes.

Feed your dog a consistent diet and keep water available at all times. Steroids often increase thirst and urination. That is expected, but a sudden extreme increase can signal a problem. If your dog cannot keep water down, or if urination becomes impossible, seek emergency care immediately.

What Recovery and Ongoing Management Usually Look Like

Long-term steroid therapy is not a short recovery. It is a management plan that can last months or years. Most dogs adjust to the medication within 1 to 2 weeks. During that time you may see increased appetite, thirst, and urination. These effects often lessen slightly as the body adapts, but they may persist at some level for the whole treatment period.

Bloodwork results usually stabilize after the first few dose adjustments. If liver enzymes rise, your vet may lower the dose or add a supplement. If the adrenal glands show suppression, the vet may recommend a slower taper. These changes are normal parts of management, not failures.

The underlying disease also affects the timeline. A dog with an autoimmune condition may need steroids for many months. A dog with a short-term inflammatory issue might finish treatment in 6 to 8 weeks. Your veterinarian will base the plan on your dog's specific response.

Most dogs live comfortably on steroids when monitored properly. The goal is the lowest effective dose that controls the disease with the fewest side effects. That balance is found through regular bloodwork, honest reporting, and close partnership with your veterinarian. The MSD Veterinary Manual for pet owners describes steroid therapy as a careful balancing act between benefit and risk, which is why monitoring is never optional.

Frequently Asked Questions

Can my dog skip bloodwork if the dose has been the same for a year?

No. Even a stable dose can cause gradual changes in the liver, kidneys, or adrenal glands over time. Bloodwork every 3 to 6 months catches these shifts early, when they are still reversible. A dog can look perfectly healthy while internal values drift. Skipping one test may seem harmless, but it breaks the pattern of early detection. Your veterinarian sets the schedule based on your dog's individual risk. Stick to it even when nothing seems wrong.

What happens if my dog's liver enzymes are high on the blood test?

High liver enzymes are a common steroid effect. Your veterinarian will look at the full panel, also one number. If the rise is mild, the vet may keep the dose the same and retest in a few weeks. If the rise is significant, the vet may lower the dose or add a liver support supplement. Do not panic. Many dogs continue steroid therapy with adjusted doses and do well. The key is acting on the result, not ignoring it.

Will my dog need steroids forever?

Not necessarily. Some conditions require lifelong treatment, while others resolve after weeks or months. The duration depends on the underlying disease and how well your dog responds. Your veterinarian will attempt to taper the dose gradually when the disease is controlled. Some dogs can stop completely. Others need a low maintenance dose for life. Your bloodwork results and your dog's clinical signs guide these decisions.

How much does bloodwork cost?

Costs vary widely by region and clinic. A basic panel may run from 100 to 250 dollars, while a more detailed test that checks adrenal function can cost more. Some clinics offer wellness packages that reduce the price. Ask your veterinary team for an estimate before the test. Do not skip monitoring due to cost. Instead, discuss payment options or a reduced testing schedule with your vet.

Can I give my dog over-the-counter pain medicine with steroids?

No. Many human pain relievers, especially non-steroidal anti-inflammatory drugs, are dangerous when combined with steroids. The combination can cause stomach ulcers, kidney damage, or liver failure. Never give any medication without asking your veterinarian first. The FDA's pet medication safety guidance warns that human drugs can be toxic to pets. Always confirm every medication, including supplements, with your vet.

What signs mean I should call the vet right away?

Call immediately if your dog vomits repeatedly, has black or bloody stools, collapses, has trouble breathing, or cannot urinate. Also call if your dog suddenly refuses food for more than a day or becomes extremely lethargic. These signs can indicate a serious steroid complication such as a stomach ulcer, pancreatitis, or adrenal crisis. Do not wait for the next scheduled appointment. When in doubt, call your veterinary clinic or an emergency hospital.

Related Clinical & Scientific Guides

• What Are the Side Effects of Bravecto for Dogs? What to Watch For
• Can You Give Your Dog Human Allergy Medicine? Whats Safe
• Can You Give Your Dog Dramamine for Car Sickness?

References and Further Reading

• FDA Center for Veterinary Medicine Animal Drug Information
• FDA Safe Use of Pet Medications
• AVMA Pet Owner Resources
• MSD Veterinary Manual Pet Owner Version
• AAHA Pet Owner Resources

Related Articles

• What Are the Long-Term Side Effects of Apoquel for Dogs?
• What Does a Vet Check for When Your Dog Needs a Heartworm Test?
• What to Do If Your Dog Is Panting Excessively After Starting Steroids
• Can You Give Your Dog Human Antihistamines? Safe Options and Doses
• How Much Does a Vet Visit Cost for a Dog's Ear Infection Medication?

This article is general educational information for pet owners. It is not a substitute for veterinary diagnosis, examination, or treatment. If your pet is showing severe or rapidly worsening signs, contact an emergency veterinary hospital immediately.