Which Department Should You Visit for Iron Deficiency?

Adults with suspected iron deficiency, low ferritin or iron deficiency anaemia can first consult the Internal Medicine department. A family doctor can also carry out the initial assessment, arrange the necessary blood tests and provide a referral to the appropriate specialty according to the results.

The cause of iron deficiency can vary from person to person. Heavy menstrual bleeding, pregnancy, insufficient iron intake, blood loss from the stomach or intestines, absorption disorders and some chronic diseases can reduce iron stores. For this reason, it is important to investigate the cause of the deficiency rather than using an iron supplement alone.

How Is the Right Department Selected for Iron Deficiency?

The doctor who should be consulted for iron deficiency may vary according to the person’s age, pregnancy status, blood values, accompanying symptoms and the possible cause of the deficiency. Although Internal Medicine is generally the starting point for adults, assessment by a different specialty may be required in some situations.

• Iron deficiency in adults: Internal Medicine can be consulted first when findings such as low ferritin, low haemoglobin, weakness, paleness or tiring easily are present.

• When it is unclear which department to visit: Family Medicine can carry out the initial assessment, arrange blood tests and refer the person to the relevant specialty when necessary.

• Iron deficiency in children: Laboratory results for babies and children should be assessed according to age. It is therefore appropriate to consult Paediatrics.

• Iron deficiency during pregnancy: Iron deficiency and anaemia occurring during pregnancy should primarily be assessed by an Obstetrics and Gynaecology specialist.

• Heavy or prolonged menstrual bleeding: An Obstetrics and Gynaecology assessment may be required when menstrual bleeding is thought to be causing iron loss.

• Abdominal pain, long-term diarrhoea or an absorption problem: A referral to Gastroenterology may be made when coeliac disease, inflammatory bowel disease or another absorption disorder is suspected.

• Blood in the stool or black stool: Rapid medical assessment is required because of the possibility of gastrointestinal bleeding. The emergency department should be contacted when the bleeding is significant or the person’s general condition deteriorates.

• Iron deficiency that does not improve with treatment: A Haematology assessment may be required when blood values do not improve despite appropriate treatment, the deficiency frequently returns or its cause cannot be explained.

• Abnormalities in more than one blood cell value: A Haematology opinion may be obtained when low haemoglobin is accompanied by changes in white blood cell or platelet values.

• Anaemia together with kidney disease: Internal Medicine or Nephrology assessment may be planned when anaemia associated with kidney function is possible.

These directions provide a general roadmap. The final choice of department should be made after the person’s medical history, examination findings and laboratory results have been assessed together.

Why Is Internal Medicine Consulted First for Iron Deficiency?

An Internal Medicine specialist does not assess iron deficiency only as a low laboratory value. The person’s diet, menstrual bleeding, digestive symptoms, medications, previous treatments and chronic diseases are examined together.

During the initial assessment, in addition to basic tests such as a complete blood count, haemoglobin and ferritin, serum iron, total iron-binding capacity, transferrin saturation, vitamin B12, folate, kidney function and inflammatory markers may be examined when necessary. Treatment may be planned according to the results, or a referral may be made to a different specialty.

An important purpose of the Internal Medicine assessment is to identify the reason behind the iron deficiency. If there is continuing blood loss, an absorption disorder or another medical condition, replacing iron stores alone may not prevent the deficiency from recurring.

Are Iron Deficiency and Anaemia the Same Thing?

Iron deficiency and anaemia do not describe the same condition. Iron deficiency is a reduction in the body’s available iron and iron stores. Anaemia is a lower-than-normal amount of red blood cells or haemoglobin, which carries oxygen in the blood.

A person’s ferritin and iron stores may be reduced while their haemoglobin is still within the normal range. As iron deficiency progresses, red blood cell and haemoglobin production may be affected, resulting in iron deficiency anaemia.

Not every type of anaemia is caused by iron deficiency. Vitamin B12 or folate deficiency, kidney diseases, chronic inflammatory conditions, blood loss, bone marrow disorders and inherited blood diseases can also cause anaemia. Therefore, an iron supplement should not be started based only on a low haemoglobin result.

Which Symptoms Can Iron Deficiency Cause?

A reduction in iron stores may not cause a noticeable complaint at first. When the deficiency progresses and anaemia develops, the amount of oxygen carried to the tissues may decrease. Symptoms affecting daily life, such as fatigue, shortness of breath or palpitations, may then occur.

The main symptoms that may occur with iron deficiency or iron deficiency anaemia include:

• Persistent weakness and fatigue: The person may feel low in energy despite adequate rest and may become tired more quickly during daily tasks.

• Pale skin: A paler-than-usual appearance may be noticed on the skin, lips or inner surface of the lower eyelid.

• Dizziness and headache: Light-headedness, dizziness or recurrent headaches may occur, particularly during movement.

• Shortness of breath: Shortness of breath may develop during activities that were previously performed comfortably, such as walking or climbing stairs.

• Palpitations: The person may notice that the heartbeat has become faster or more noticeable.

• Hair loss and brittle nails: Hair thinning, hair loss and brittle nails may occur. However, these symptoms are not specific to iron deficiency.

• Cold hands and feet: Sensitivity to cold may increase together with changes in circulation and oxygen transport.

• Difficulty with attention and concentration: Mental fatigue and concentration problems may be experienced, particularly when the deficiency is prolonged.

• Changes around the tongue and mouth: Pain or sensitivity of the tongue and cracks at the corners of the mouth may occur.

• A desire to eat non-food substances: A desire to eat non-food substances such as ice, soil or starch may develop. This condition is called pica.

These symptoms may also occur in thyroid diseases, sleep disorders, infections and other vitamin deficiencies. The diagnosis should be established through a physician’s assessment and laboratory tests rather than symptoms alone.

Which Tests Are Assessed When Diagnosing Iron Deficiency?

Iron deficiency is generally not diagnosed according to a single laboratory result. The physician assesses the symptoms, medical history, physical examination findings and complementary blood tests together.

• Complete blood count: This provides information about red blood cells, haemoglobin, haematocrit, white blood cells and platelets.

• Haemoglobin: This is the protein involved in the oxygen-carrying capacity of red blood cells. A low result may support anaemia but does not show its cause on its own.

• Haematocrit: This shows the proportion of red blood cells in the total blood volume.

• MCV: This shows the average size of red blood cells. It may be low in iron deficiency anaemia but is not diagnostic on its own.

• Ferritin: This is one of the main indicators providing information about the body’s iron stores. Low ferritin may support reduced iron stores.

• Serum iron: This provides information about the amount of iron circulating in the blood. Because it can be affected by changes during the day and other factors, it is not assessed alone.

• Total iron-binding capacity: This helps assess the iron-binding capacity of the proteins that transport iron in the blood.

• Transferrin saturation: This shows how much of the iron-transporting protein transferrin is filled with iron.

• Inflammatory markers: Tests such as C-reactive protein may help assess whether the ferritin result has been affected by an inflammatory condition.

• Vitamin B12 and folate: These may be examined to distinguish causes of anaemia other than iron deficiency.

Although ferritin is important in the assessment of iron stores, it can increase during inflammation, infection and some chronic diseases. Therefore, a normal or high ferritin result does not rule out iron deficiency on its own in certain clinical situations. The tests must be interpreted together.

Which Doctor Should You See for Low Ferritin?

Internal Medicine is generally the first department for adults with low ferritin. A family doctor can also assess the ferritin result together with the complete blood count, haemoglobin and other iron indicators.

Low ferritin may suggest that the body’s iron stores have decreased, but it does not explain the cause of the deficiency. During the medical assessment, diet, menstrual pattern, pregnancy, blood donation, digestive symptoms, medications and previous test results may be reviewed.

People with heavy menstrual bleeding may be referred to Obstetrics and Gynaecology, while people with a suspected absorption disorder or gastrointestinal bleeding may be referred to Gastroenterology. A Haematology assessment may be required for low ferritin that does not improve with treatment, cannot be explained or frequently recurs.

When Should You Visit the Haematology Department?

Not everyone with iron deficiency needs to consult Haematology directly. Iron deficiency with an identifiable cause that responds to treatment can usually be followed by Family Medicine or Internal Medicine.

Situations in which a Haematology assessment may be required include:

• An inadequate response to treatment: Further assessment may be necessary if haemoglobin or iron stores do not improve despite the appropriate use of iron treatment.

• Frequent recurrence of iron deficiency: Values that fall again shortly after improving with treatment may be investigated for continuing blood loss or an absorption problem.

• An unexplained cause of the deficiency: Further examination may be planned when no clear cause relating to diet, menstrual bleeding, pregnancy or the digestive system can be identified.

• Inability to use oral iron treatment: Different treatment options may be considered when oral treatment cannot be used because of significant side effects, an absorption problem or another clinical reason.

• More than one blood cell type being affected: A Haematology assessment is important when low haemoglobin is accompanied by abnormalities in white blood cells or platelets.

• Suspicion of a different type of anaemia: Further assessment may be required when thalassaemia, haemolytic anaemia, a bone marrow disorder or another haematological cause is suspected.

• The possibility of an inherited blood disorder: A specialist opinion may be obtained when family history, persistent changes in blood values or blood smear findings suggest an inherited condition.

Persistent, treatment-resistant or recurrent iron deficiency anaemia may need to be assessed by Haematology. However, the decision to refer should be made according to the person’s test results and clinical condition.

Which Doctor Should Women See for Iron Deficiency?

Iron deficiency in women may be associated particularly with heavy or prolonged menstrual bleeding. The initial assessment can be performed by Internal Medicine or Family Medicine. Obstetrics and Gynaecology should also be consulted when the blood loss is thought to be related to the menstrual cycle.

Menstrual bleeding lasting longer than seven days, the need to change a pad or tampon very frequently, large blood clots, weakness affecting daily life during menstruation or bleeding between periods may require assessment. Heavy menstrual bleeding may be accompanied by uterine fibroids, hormonal changes or other gynaecological conditions.

Even if an iron supplement helps improve blood values, it may not eliminate the continuing source of bleeding. It is therefore important both to replace the deficiency and to assess the cause of the bleeding.

Which Department Should You Visit for Iron Deficiency During Pregnancy?

The need for iron increases during pregnancy. Iron deficiency or anaemia detected during pregnancy should primarily be assessed by an Obstetrics and Gynaecology specialist. A family doctor can also monitor blood values as part of routine pregnancy follow-up.

The type, dose and duration of the supplement used during pregnancy should be determined individually. Because not every type of anaemia during pregnancy is caused by iron deficiency, it is important to assess haemoglobin and iron indicators together. A Haematology opinion may be requested in cases of severe anaemia, a lack of response to treatment or suspicion of a different blood disorder.

High-dose iron should not be used without a physician’s recommendation. Unnecessary or uncontrolled iron use may cause side effects and excessive iron accumulation in the body.

Which Department Should You Visit for Iron Deficiency in Children?

Paediatrics should be consulted when iron deficiency is suspected in babies and children. Children’s iron needs vary according to their stage of growth, and blood tests are interpreted according to age ranges that differ from those used for adults.

Medical assessment should be obtained if children have paleness, loss of appetite, tiring easily, irritability, attention problems or concerns about development. However, these symptoms are not specific to iron deficiency and must be confirmed through blood tests.

The Republic of Türkiye Ministry of Health carries out preventive measures under the Iron-Like Türkiye Programme to protect babies and children from the negative effects of iron deficiency. Iron preparations should be given to children only following a physician’s recommendation appropriate for their age and weight.

When Should You Visit the Gastroenterology Department?

The cause of iron deficiency may be blood loss from the stomach or intestines or an inability to absorb enough iron. A digestive system assessment may be required, particularly in iron deficiency anaemia that cannot be explained, recurs or does not respond to treatment.

Situations in which a Gastroenterology assessment may be required include:

• Blood in the stool: Red blood or black, tar-like stool may be a sign of gastrointestinal bleeding.

• Long-term abdominal pain: Recurrent or unexplained abdominal pain should be assessed when it occurs with iron deficiency.

• Chronic diarrhoea: Long-lasting diarrhoea may be associated with a condition affecting the absorption of iron and other nutrients.

• Unexplained weight loss: The underlying cause should be investigated when unintentional weight loss occurs with iron deficiency.

• Suspected coeliac disease: Coeliac disease can reduce the absorption of iron from the intestines and cause iron deficiency.

• A history of stomach ulcers or frequent use of painkillers: Some painkillers can increase the risk of bleeding in the stomach and intestines.

• Difficulty swallowing or persistent stomach complaints: Persistent digestive symptoms occurring with iron deficiency should be assessed by a physician.

• Unexplained iron deficiency in adult men or postmenopausal women: When no clear cause is found, investigation for hidden blood loss from the digestive system may be planned.

Endoscopy or colonoscopy is not automatically performed for every person with iron deficiency. The necessary tests are determined according to the person’s age, symptoms, family history, laboratory results and risk factors.

What Are the Common Causes of Iron Deficiency?

Iron deficiency can develop when the body does not receive enough iron, the need for iron increases, iron cannot be absorbed adequately from the intestines or blood is lost. More than one cause may be present in the same person.

• Insufficient iron intake: A diet that is inadequate or unbalanced in iron may contribute to reduced iron stores, particularly during periods of increased need.

• Heavy menstrual bleeding: Regularly losing a large amount of blood is one of the common causes of iron deficiency.

• Pregnancy: The need for iron increases because of the higher blood volume and the needs of the fetus during pregnancy.

• Periods of growth: Rapid growth during infancy, childhood and adolescence can increase iron requirements.

• Bleeding from the stomach or intestines: Ulcers, intestinal diseases or bleeding related to certain medicines may cause iron loss.

• Absorption disorders: Coeliac disease, inflammatory bowel diseases and stomach or intestinal surgery may reduce iron absorption.

• Frequent blood donation: Repeated blood donation without adequate intervals can reduce iron stores.

• Other recurrent bleeding: Nosebleeds, urinary tract bleeding or other chronic blood loss may contribute to iron deficiency.

To correct the deficiency permanently, it is necessary not only to provide iron but also, when possible, to identify the underlying cause.

Should Iron Medicine Be Used Before Seeing a Doctor?

Starting an iron supplement without a blood test or without confirming iron deficiency is not recommended. Symptoms such as fatigue, hair loss, dizziness and palpitations can occur in many health conditions other than iron deficiency.

Iron supplements can cause side effects such as nausea, abdominal pain, constipation, diarrhoea and darkening of the stool. In addition, taking unnecessary amounts of iron can cause iron accumulation in the body and organ damage. The product, dose, frequency and duration of treatment should therefore be determined by a physician.

Even after iron deficiency has been confirmed, it is not appropriate for the person to increase the dose or stop treatment early without medical advice. The timing of blood tests and the duration of treatment may vary from person to person.

Which Symptoms Require Rapid Assessment?

Iron deficiency can usually be assessed in an outpatient setting. However, rapid medical assessment may be required when significant anaemia, active bleeding or symptoms affecting the circulatory system are present.

Healthcare should be sought without delay in the following situations:

• Chest pain: Emergency assessment is required, particularly when it occurs with shortness of breath, sweating or palpitations.

• Severe shortness of breath at rest: Difficulty breathing even while resting should be assessed rapidly.

• Fainting or a change in consciousness: Fainting, significant light-headedness or confusion may require emergency assessment.

• A very fast or irregular heartbeat: Persistent palpitations and a deterioration in general condition should not be ignored.

• Black, tar-like stool: Emergency assessment may be required because this can be a sign of upper gastrointestinal bleeding.

• Visible blood in the stool or vomit: Medical care should be sought directly because of the possibility of active bleeding.

• Uncontrollable menstrual bleeding: Emergency assessment should be obtained when very heavy bleeding occurs with dizziness, a feeling of impending fainting or palpitations.

• Bleeding and severe weakness during pregnancy: Rapid medical assessment is required when bleeding, shortness of breath, fainting or significant weakness occurs during pregnancy.

These symptoms may not always be caused by iron deficiency. However, active bleeding, severe anaemia or another emergency cannot be ruled out solely by assessing symptoms at home.

Is an Online Doctor Consultation Suitable for Iron Deficiency?

For people without emergency warning signs, an online Internal Medicine consultation may be used to plan the initial assessment and share existing blood results with a physician. During the consultation, symptoms, diet, menstrual bleeding, medications, chronic diseases and previous tests can be assessed.

The physician can interpret the available complete blood count, ferritin and other test results, provide information about missing tests and help determine which specialty the person should consult. An in-person examination, new blood tests or an assessment by Gastroenterology, Obstetrics and Gynaecology or Haematology may be recommended when necessary.

A physical examination, blood collection, intravenous treatment or emergency intervention cannot be performed during an online consultation. People with chest pain, severe shortness of breath, fainting, active bleeding or a deterioration in general condition should seek emergency healthcare without waiting for an online consultation.

Plan Your Online Internal Medicine Assessment With Happ Health

Interpreting changes in ferritin, haemoglobin or other iron indicators on their own can be misleading. To confirm iron deficiency, investigate its cause and determine the necessary specialty, test results must be assessed together with the person’s symptoms and medical history.

When there are no emergency warning signs, you can arrange an online Internal Medicine consultation through Happ Health, share your existing test results with a physician and obtain information about possible additional tests and the follow-up process. An in-person examination or referral to the relevant specialty may be planned after the assessment when necessary.