Low vitamin d and low anion gap

Renal tubular acidosis RTA is acidosis and electrolyte disturbances due to impaired renal hydrogen ion excretion type 1impaired bicarbonate resorption type 2or abnormal aldosterone production or response type 4.

Type 3 is extremely rare and is not discussed. Patients may be asymptomatic, display symptoms and signs of electrolyte derangements, or progress to chronic kidney disease.

Diagnosis is based on characteristic changes in urine pH and electrolytes in response to provocative testing. Treatment corrects pH and electrolyte imbalances using alkaline agents, electrolytes, and, rarely, drugs.

RTA defines a class of disorders in which excretion of hydrogen ions or reabsorption of filtered bicarbonate is impaired, leading to a chronic metabolic acidosis with a normal anion gap. Chronic RTA is often associated with structural damage to renal tubules and may progress to chronic kidney disease. Decrease in aldosterone secretion or activity.

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Hypercalciuria is the primary abnormality in some familial cases, with calcium-induced tubulointerstitial damage causing distal RTA. Nephrocalcinosis and nephrolithiasis are possible complications of hypercalciuria and hypocitraturia if urine is relatively alkaline.

This syndrome is rare. Sporadic cases occur most often in adults and may be primary nearly always in women or secondary. Familial cases usually first manifest in childhood and are most often autosomal dominant. Secondary type 1 RTA may result from drugs, kidney transplantationor various disorders:.

Kidney transplantation. Medullary sponge kidney. Chronic obstructive uropathy. Drugs mainly amphotericin B, ifosfamideand lithium. Sickle cell anemia. This syndrome may occur as part of a generalized dysfunction of proximal tubules and patients can have increased urinary excretion of glucose, uric acid, phosphate, amino acids, citrate, calcium, potassium, and protein.

Osteomalacia or osteopenia including rickets in children may develop. Mechanisms may include hypercalciuria, hyperphosphaturia, alterations in vitamin D metabolism, and secondary hyperparathyroidism. Fanconi syndrome. Light chain nephropathy due to multiple myeloma. Various drug exposures usually acetazolamidesulfonamides, ifosfamideoutdated tetracyclineor streptozocin.

It sometimes has other etiologies, including vitamin D deficiency, chronic hypocalcemia with secondary hyperparathyroidism, kidney transplantationheavy metal exposureand other inherited diseases eg, fructose intolerance, Wilson diseaseoculocerebrorenal syndrome [Lowe syndrome], cystinosis. Type 4 results from aldosterone deficiency or unresponsiveness of the distal tubule to aldosterone. Because aldosterone triggers sodium resorption in exchange for potassium and hydrogen, there is reduced potassium excretion, causing hyperkalemia and reduced acid excretion.

Hyperkalemia may decrease ammonia excretion, contributing to metabolic acidosis. This disorder is the most common type of RTA. It typically occurs sporadically secondary to impairment in the renin- aldosterone -renal tubule axis hyporeninemic hypoaldosteronismwhich occurs in patients with the following:.

Diabetic nephropathy. Chronic interstitial nephritis. Aldosterone synthase type I or II deficiency. Chronic kidney diseaseusually due to diabetic nephropathy or chronic interstitial nephritis. Congenital adrenal hyperplasiaparticularly hydroxylase deficiency. HIV nephropathy due, possibly in part, to infection with Mycobacterium avium complex or cytomegalovirus. Potassium-sparing diuretics eg, amilorideeplerenonespironolactonetriamterene.

Obstructive uropathy.By proceeding, I accept the Terms and Conditions. Other parameters are within normal range. It means you are having low anion gap and it occurs from the presence of abnormal positively charged proteins Low AGAP can occur in from a cancer condition called multiple myeloma. Multiple myeloma is blood cancer that develops in the plasma cells found in the soft spongy tissue at the center of your bones called bone marrow I would advise you to do blood and urine tests as well as a bone marrow biopsy.

Consult your doctor regarding these tests. Hope I have answered your query. If you have more queries i will be glad to help. Regards, Dr. Monish De Oncologist. Coronavirus Doctor Consultation Are you a Doctor? Login Register. Your Name :. Your e-mail :. Password :. Confirm Password :.

low vitamin d and low anion gap

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low vitamin d and low anion gap

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Home Premium Questions Home Is a low anion gap a serious cause for concern? Question: I received a blood test result that shows low agap level of 3 normal being 5 and up. I'm worried about this being related to certain cancers. Can I provide you with my full blood results and have your opinion? Monish De Oncologist Above answer was peer-reviewed by : Dr. Yogesh D. Are there no other reasons that my agap level would be low? Is it most likely cancer?

There were no proteins found in my urine. Also, bone marrow biopsy is a must to rule out multiple myeloma.

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Answered by. Ask me a question. The User accepted the expert's answer Ask an Oncologist. Share on.Causes include hypoparathyroidism, vitamin D deficiency, and renal disease. Manifestations include paresthesias, tetany, and, when severe, seizures, encephalopathy, and heart failure.

Diagnosis involves measurement of serum calcium with adjustment for serum albumin concentration. Treatment is administration of calcium, sometimes with vitamin D. Hypoparathyroidism is characterized by hypocalcemia and hyperphosphatemia and often causes chronic tetany. Hypoparathyroidism results from deficient parathyroid hormone PTHwhich can occur in autoimmune disorders or after the accidental removal of or damage to several parathyroid glands during thyroidectomy.

Manifestations of hypocalcemia usually begin about 24 to 48 hours postoperatively but may occur after months or years. PTH deficiency is more common after radical thyroidectomy for cancer or as the result of surgery on the parathyroid glands subtotal or total parathyroidectomy.

Risk factors for severe hypocalcemia after subtotal parathyroidectomy include. Idiopathic hypoparathyroidism is an uncommon sporadic or inherited condition in which the parathyroid glands are absent or atrophied.

It manifests in childhood. The parathyroid glands are occasionally absent and thymic aplasia and abnormalities of the arteries arising from the brachial arches DiGeorge syndrome are present. Other inherited forms include polyglandular autoimmune failure syndromeautoimmune hypoparathyroidism associated with mucocutaneous candidiasisand X-linked recessive idiopathic hypoparathyroidism.

Pseudohypoparathyroidism is an uncommon group of disorders characterized not by hormone deficiency but by target organ resistance to PTH. Complex genetic transmission of these disorders occurs. Type Ia pseudohypoparathyroidism Albright hereditary osteodystrophy is caused by a mutation in the stimulatory Gs-alpha1 protein of the adenylyl cyclase complex GNAS1.

The result is failure of normal renal phosphaturic response or increase in urinary cAMP cyclic adenosine monophosphate to PTH. Patients are usually hypocalcemic and hyperphosphatemic. Secondary hyperparathyroidism and hyperparathyroid bone disease can occur. Associated abnormalities include short stature, round facies, intellectual disability with calcification of the basal ganglia, shortened metacarpal and metatarsal bones, mild hypothyroidism, and other subtle endocrine abnormalities.

Because only the maternal allele for GNAS1 is expressed in the kidneys, patients whose abnormal gene is paternal, although they have many of the somatic features of the disease, do not have hypocalcemia, hyperphosphatemia, or secondary hyperparathyroidism; this condition is sometimes described as pseudopseudohypoparathyroidism.

Type Ib pseudohypoparathyroidism is less well known. Affected patients have hypocalcemia, hyperphosphatemiaand secondary hyperparathyroidism but do not have the other associated abnormalities.

Type II pseudohypoparathyroidism is even less common than type I. In affected patients, exogenous PTH raises the urinary cAMP normally but does not raise serum calcium or urinary phosphate.

An intracellular resistance to cAMP has been proposed. Vitamin D deficiency and dependency are discussed in full elsewhere. Vitamin D is ingested in foods naturally high in vitamin D or fortified with it. It is also formed in the skin in response to sunlight ultraviolet light. Vitamin D deficiency may result from inadequate dietary intake or decreased absorption due to hepatobiliary disease or intestinal malabsorption. It can also result from alterations in vitamin D metabolism as occur with certain drugs eg, phenytoinphenobarbitalrifampin or from decreased formation in the skin due to lack of exposure to sunlight.

Aging also decreases skin synthetic capacity. Decreased skin synthesis is an important cause of acquired vitamin D deficiency among people who spend a great deal of time indoors, who live in high northern or southern latitudes, and who wear clothing that covers them completely or frequently use sunblocking agents.The Anion gap is the difference in the cations and anions in the body. Cations are positively-charged ions while anions are negatively-charged ions.

The serum anions and cations are usually used, but urine measurements can also be used. The degree of the gap in the serum electrolytes is calculated to determine reasons for metabolic acidosis.

When the gap is higher than normalhigh anion gap metabolic acidosis is revealed, whereas if the gap is low, low anion gap metabolic acidosis is concluded. The anion gap refers to all the unmeasured anions in plasma. Commonly measured cations include sodium, potassium, calcium and magnesium. Cations that are normally unmeasured include some pathological proteins. Commonly measured anions include chloride, phosphate, and bicarbonate and commonly unmeasured ones include sulphates, lactate and acetoacetate.

The anion gap represents these unmeasured anions which are not part of the usual laboratory tests. When metabolic acidosis occurs, the hydrogen ions cations reacts with bicarbonate anions, resulting in decreased concentration of the measured anion and increased concentration in the unmeasured anions, leading to a gap.

It is an infrequent form of metabolic acidosis and accounts to only one to three percent of all cases. A low anion gap is usually caused by hypoalbuminemia, a decrease in albumin in the blood. Albumin is an anion which when decreased, it allows other anions such as bicarbonate and chloride to be retained. This causes the gap to decrease. Common conditions that lead to a low anion gap are hemorrhage, liver cirrhosis, nephritic syndrome, and intestinal obstruction.

Multiple myeloma also may cause a low anion gap because of an increase in plasma immunoglobulins that leads to hypoalbuminemia.

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It is also known as hyperchloremic acidosis. In a high anion gap, the presence of acidosis causes the bicarbonate ions to decrease. Common conditions that lead to a high anion gap include the following:.People can have a low anion gap for a number of reasons.

This value, which compares the concentration of positively charged ions in the blood to negatively charged ions in the blood, can become abnormal by a number of metabolic derangements. Having low levels of albumina negatively charged protein, can cause a decreased anion gap. High concentrations of positively charged proteins can also cause this change.

Lab error, lithium intoxication, and bromide ingestion can all also cause a low anion gap. In order to understand the significance of a low anion gap, it helps to understand what the anion gap is, how it is measured, and what it means. The anion gap is calculated after measuring the concentrations of different electrolytes in the serum.

Typically, it is calculated by subtracting negatively charged substances, including chloride and bicarbonate, from positively charged substances, including sodium. A normal value is typically around Having a low anion gap is fairly rare, and in some studies has been shown to be present in less than 1 percent of hospitalized patients. Patients who have decreased levels of albumin — a protein made by the liver that circulates in the blood — can have a low anion gap.

Albumin has a negative charge, and when the concentrations of this protein decrease in the blood, the body compensates by keeping more negatively charged ions including chloride in the blood. Higher levels of chloride and bicarbonate lead to a decreased anion gap. Patients with liver disease, malnutritionand kidney disease commonly have decreased levels of albumin in their blood.

Conditions that result in the excess production of positively-charged protein can also cause a decreased anion gap. Multiple myelomafor example, is a malignancy in which patients produce large amounts of proteins that are typically used as antibodies. As these proteins have a positive charge, the body compensates by excreting positively charged ions such as sodium.

low vitamin d and low anion gap

Therefore, the anion gap is decreased. Some intoxications in which patients take in negatively charged ions can also cause a low anion gap.

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An overdose of lithium, which is a medication commonly used to treat bipolar disorder, increases the amount of negative ions in the serum, decreasing the anion gap. Taking excess bromide can cause a similar effect. Another cause of a low anion gap is laboratory error.Erythrocyte sedimentation rate: This blood test determines the rate at which red blood cells settle to the bottom of a tube. A faster-than-normal rate may indicate a systemic disease such as lupus.

The sedimentation rate is not specific for one disease but may be elevated in lupus, other inflammatory conditions or with infection. Kidney and liver assessment: A blood test can assess how well your kidneys and liver are functioning. Lupus may affect these organs as well as other systemic organs. Urinalysis: An examination of a sample of your urine may show an increased protein level, which may occur if lupus has affected your kidneys.

Antinuclear antibody ANA test: A positive test for the presence of these antibodies. Your doctor may advise more specific antibody testing and refer you to a rheumatologist. More info here. Chest X-ray: An image of your chest and pleura, which surrounds your lungs, may reveal abnormal shadows or inflammation of your lungs, which may occur with lupus.

Electrocardiogram ECG : This test measures the pattern of electrical impulses generated in your heart. It can help identify irregular rhythms, damage to your heart or enlargement of your heart, any of which may occur with lupus. Syphilis test: If your doctor orders a syphilis test, it's not because he or she thinks you might have syphilis. Rather, a false-positive to a syphilis test can indicate antiphospholipid antibodies in your blood. The presence of antiphospholipid antibodies has been associated with an increased risk of blood clots, strokes and recurrent miscarriages.

White Cell Count relates to the body's immune system. Red Cell Count refers to the red blood cells. These cells carry oxygen in the blood. Low values are commonly seen in individuals with certain types of anemia.

Hemoglobin HgB is the oxygen carrying component in the red blood cell. It is formed in the bone marrow. Hematocrit Hct - is the volume percentage of red blood cells in whole blood. MCV stands for mean cell volume. This is a measure of the average size of the red blood cells. MCH stands for mean cell hemoglobin. This is a measure of the amount of hemoglobin associated with each red cell.

MCHC stands for mean cell hemoglobin concentration. This value represents the mean hemoglobin concentration in each red blood cell. Platelet Count refers to the disk shaped structures found in the blood, primarily known for their role in the coagulation process.

Neutrophils, Lymphocytes, Monocytes, Eosinophils, and Basophils are the different types of white blood cells. A detailed look at all of the white cells will provide a physician with useful information regarding the status of the immune system.Anion gap is a value derived from the results obtained of blood electrolyte test.

Electrolytes are substances that are found naturally in the body. They play vital role in various functions of the body. Major electrolytes are sodium, chloride, potassium, bicarbonate, etc.

These electrolytes are electrically charged. They are involved in balancing acid and alkali in blood. Some electrolytes are positively charged and some are negatively charged.


Positively charged are called cations sodium, potassium and negatively charged electrolytes chloride, bicarbonate are called anions. The anion gap can be normal, high and low. If the value of anion gap is too high or too low, it indicates something wrong in your body. If the doctor suspects of electrolyte imbalance in a patient, he recommends a blood electrolyte test.

From this test anion gap can be easily calculated. Electrolyte imbalance can occur due to various reasons such as diarrhea, vomiting, starvation, fever, burns, infection etc.

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Most common symptoms of electrolyte imbalance are drowsiness, dry skin, dry tongue, increased thirst, shortness of breath, weak pulse, confusion etc. Several conditions can produce imbalance in the pH level of blood resulting in abnormal anion gap.

Let us know the reasons of high anion gap first. Causes of high anion gap: High anion gap occurs when the blood is excessively acidic in nature.

Is a low anion gap a serious cause for concern?

This means a person is suffering from acidosis. Conditions responsible for acidosis lead to high anion ion gap. These conditions are. Low anion gap is rarely found. If the result derived from value of electrolyte suggests low anion gap, the test is usually repeated as there may be a laboratory error. Besides laboratory error, the other cause of low anion can be hypoalbuminemia. It is less amount of albumin in the body. Albumin is a type of protein.

Low albumin level generally occurs due to inflammatory changes in the body. Hypoalbuminemia is found in conditions such as starvation, malnutrition, sepsis, post surgery, kidney disease, severe burns etc. Hypoalbuminemia is also considered to be a reason for low anion gap in people suffering from multiple myeloma. Usually there are no particular symptoms of low anion gap, symptoms are those of underlying cause that has given rise to low anion gap.

These symptoms may be as follows:. Treatment of abnormality in anion gap is mainly based on addressing the underlying cause.

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