Centre
Şişli, Istanbul
Department
Clinical nutrition
Team
4 dietitians
Appointments
In person · online

From your lab report
to your plate

Four dietitians who speak the same language as your doctor: diabetes, insulin resistance, PCOS, thyroid, cholesterol, kidney disease and bariatric surgery. In person in Şişli, online from anywhere.

Our consultation room in Şişli
Our consultation room in Şişli
A lab report next to a balanced Turkish meal
A lab report next to a balanced Turkish meal
Body composition measurement
Body composition

What do my blood test results show?

Choose a parameter to read what it measures, its general reference range and how it relates to nutrition. You do not enter any values and we do not interpret them; diagnosis and treatment are for your doctor.

The full blood test guide

Glucose metabolism

Blood lipids

Thyroid

Kidney and uric acid

Vitamins and minerals

HbA1cGlycated haemoglobin % < 5.7% (adults)

What does it measure?

Reflects average blood sugar over the past 2–3 months: the share of haemoglobin in red blood cells bound to glucose. It summarises months, not a single day.

Relationship to nutrition

HbA1c changes over time with the total carbohydrate load and its spread across meals, meal frequency, activity and weight change. After a plan changes, a new value usually needs at least three months. We read HbA1c together with meter readings; they tell different things.

Açlık glukozuFasting plasma glucose mg/dL 70–99 mg/dL

What does it measure?

The amount of glucose in the blood after at least 8 hours of fasting. A snapshot of that morning; it does not show changes through the day.

Relationship to nutrition

Dinner time and content, late-night snacks, sleep and medication can affect the morning value. In the plan we look especially at the evening meal and late eating habits.

İnsülinFasting insulin µIU/mL Laboratory-specific; common upper limit ≈ 25 µIU/mL

What does it measure?

The amount of insulin released by the pancreas while fasting. It only makes sense together with fasting glucose measured at the same time.

Relationship to nutrition

High fasting insulin is often associated with insulin resistance. Meal intervals, refined carbohydrates and sugary drinks, waist circumference and activity are the main lifestyle factors linked to it.

HOMA-IRInsulin resistance estimate — No universal cut-off; studies often use 2.5

What does it measure?

Not a test but a calculation: fasting glucose (mg/dL) × fasting insulin (µIU/mL) / 405. A simple indicator used to estimate insulin resistance.

Relationship to nutrition

HOMA-IR varies with age, weight, ethnicity and laboratory method, so no decision is made on a single value. Meal pattern, fibre and protein, sleep and activity are related factors. We read it together with waist, HbA1c and blood lipids.

LDLLDL cholesterol mg/dL < 100 mg/dL optimal (general)

What does it measure?

The cholesterol carried in low-density lipoproteins. The most studied blood lipid in relation to vascular health.

Relationship to nutrition

Saturated fat (butter, tail fat, processed meat, a lot of full-fat cheese) and trans fat tend to raise LDL. Soluble fibre in oats and legumes and unsaturated fats such as olive oil and walnuts are the key dietary changes. Genetics is a strong factor; diet alone may not be enough.

HDLHDL cholesterol mg/dL Men > 40, women > 50 mg/dL

What does it measure?

The cholesterol in high-density lipoproteins, which help carry excess cholesterol from tissues back to the liver.

Relationship to nutrition

Regular activity, stopping smoking, reducing excess weight and cutting refined carbohydrates are the main factors linked to HDL. Avoid trans fats and prefer unsaturated fats.

TGTriglycerides mg/dL < 150 mg/dL

What does it measure?

Triglycerides make up most of the fat in the blood; the liver produces them from unused calories, sugar and alcohol.

Relationship to nutrition

Triglycerides respond quickly to diet. Sugary drinks, white flour and sweets, alcohol and large portions tend to raise them; oily fish, fibre and regular activity are linked to lower values.

TSHThyroid-stimulating hormone mIU/L About 0.4–4.0 mIU/L (lab-specific)

What does it measure?

The pituitary hormone that drives the thyroid. TSH rises when thyroid hormones fall and falls when they rise.

Relationship to nutrition

TSH reflects thyroid function and medication dose more than diet. Adequate iodine (iodised salt, dairy, fish), selenium and iron matter. Taking thyroid medication with coffee, calcium or iron can reduce absorption.

sT4Free thyroxine ng/dL About 0.9–1.7 ng/dL (lab-specific)

What does it measure?

The free (unbound) part of the main hormone released by the thyroid.

Relationship to nutrition

fT4 is read together with TSH. Diet has limited direct effect, but iodine deficiency or excess (supplements, seaweed products) can affect thyroid function.

eGFREstimated glomerular filtration rate mL/dk/1,73 m² ≥ 90 (judged by age)

What does it measure?

An estimate of how well the kidneys filter blood, calculated from creatinine, age and sex. Higher means better filtering.

Relationship to nutrition

As kidney function falls, protein, potassium, phosphorus and sodium intake matter more, but the limits are set by the doctor based on stage, urine protein and other tests. Creatinine depends on muscle mass, so the estimate can drift in very muscular or very thin people.

Ürik asitUric acid mg/dL Men ≈ 3.4–7.0, women ≈ 2.4–6.0 mg/dL

What does it measure?

A waste product formed when substances called purines are broken down; excreted by the kidneys.

Relationship to nutrition

Organ meats, some seafood, a lot of red meat, alcohol (especially beer) and fructose-sweetened drinks tend to raise uric acid. Enough fluid and reducing excess weight are linked to lower values.

FerritinFerritin (iron stores) ng/mL Women ≈ 15–150, men ≈ 30–400 ng/mL (lab-specific)

What does it measure?

An indicator of the body's iron stores. Low ferritin suggests depleted stores.

Relationship to nutrition

Red meat, legumes and dark leafy greens provide iron; plant iron is absorbed better with vitamin C and worse with tea and coffee. After bariatric surgery iron absorption can fall, so it is monitored regularly.

B12Vitamin B12 (cobalamin) pg/mL About 200–900 pg/mL (lab-specific)

What does it measure?

A vitamin needed for the nervous system and blood formation; found naturally only in animal foods.

Relationship to nutrition

Meat, fish, eggs and dairy provide B12. Vegans, long-term users of metformin or stomach acid medication and people after bariatric surgery are at higher risk of deficiency; regular monitoring is advised.

25(OH)DVitamin D (25-hydroxyvitamin D) ng/mL ≥ 30 ng/mL sufficient (Endocrine Society)

What does it measure?

The circulating form that shows the body's vitamin D status. Most is made in the skin with sunlight.

Relationship to nutrition

Food provides limited vitamin D (oily fish, egg yolk, fortified products). Indoor work, covered clothing, excess weight and bariatric surgery raise the risk of low values. Supplements are often needed and planned by a doctor.

This page is general information. Reference ranges vary by laboratory, age, sex and pregnancy; the range on your report is the one that applies. Diagnosis and treatment are carried out by your doctor. No values are entered on this page and no data is sent to the server.

Areas of clinical nutrition

Each area starts with the tests your doctor has requested and your daily routine. Hover over a row to see the details.

All areas and fees

Measure, plan, review

Every appointment is part of a cycle. We look at the same values again at intervals and update the plan accordingly.

  1. Client and dietitian taking a measurement on a body composition analyser

    Measure

    Your latest blood tests, the medication you take and a body composition analysis. We go through one of your days hour by hour: sleep, work, meals, activity.

    At this step
    Body composition, waist circumference, test summary
  2. Dietitian explaining portions with real food

    Plan

    A plan written in household measures, with set meal times. It sets out what, how much and when you eat, rather than what you cannot eat.

    At this step
    Written plan, portion examples, shopping list
  3. Hands marking a line on a blood test report

    Review

    At follow-up appointments we measure again under the same conditions; the plan is updated with new tests at the interval your doctor requests.

    At this step
    Repeat measurement, plan update, written summary for your doctor

Nutrition stage by stage after bariatric surgery

Six stages from preparation to a normal diet. Click a stage to see what goes on the plate in those weeks and what is avoided.

Pre-operative preparation

Pre-operative preparation

Duration
2–4 weeks before surgery
Texture
Normal; low-energy, protein-focused

Following the surgical team's advice, a low-energy, protein-focused period may be used. It is also the time to practise eating slowly, taking small bites and not drinking with meals.

On the plate at this stage

  • Boiled eggs, curd cheese, strained yoghurt
  • Grilled fish and chicken, legume dishes
  • Plenty of vegetables, water (between meals)

Avoided at this stage

  • Sugary and fizzy drinks
  • Fried food, pastries
  • Alcohol

If you smoke, your team will ask you to stop; this period is a good start for that too.

Clear liquids

Clear liquids

Duration
First 1–2 days
Texture
Clear, sugar-free liquids

Started in hospital in the first days after surgery. Liquids are taken sip by sip in very small amounts.

On the plate at this stage

  • Water, sugar-free clear herbal teas
  • Fat-free strained meat or vegetable broth
  • Sugar-free, still clear drinks

Avoided at this stage

  • Fizzy drinks, straws
  • Sugary drinks, fruit juice

Your team sets the daily fluid goal; dehydration is the most common problem in this stage.

Full liquids and protein

Full liquids and protein

Duration
About weeks 1–2
Texture
Runny, smooth

The stage where meeting protein needs begins. Your team may suggest a protein drink if needed.

On the plate at this stage

  • Low-fat milk, ayran, kefir
  • Thinned strained yoghurt
  • Strained lentil or vegetable soup

Avoided at this stage

  • Food with solid pieces
  • Sugary milk puddings

Protein first and fluids between meals becomes a habit from this stage on.

Purée

Purée

Duration
About weeks 3–4
Texture
Smooth purée, by spoon

Food is blended to a smooth texture. Portions are a few tablespoons; every bite is eaten slowly.

On the plate at this stage

  • Blended lentil soup, mashed egg
  • Curd cheese, strained yoghurt
  • Boiled vegetable and fish purée

Avoided at this stage

  • Dry, stringy meat, raw vegetables
  • Rice, pasta, bread

Spreading a meal over 20–30 minutes clearly reduces discomfort.

Soft

Soft

Duration
About weeks 5–8
Texture
Mashable with a fork

Well-cooked foods that can be mashed with a fork. New foods are tried one at a time.

On the plate at this stage

  • Soft-cooked fish, lean meatballs
  • Scrambled egg, white cheese
  • Well-cooked vegetable dishes

Avoided at this stage

  • Crusty and hard foods
  • Pastries, fried food

If a food causes discomfort it can be retried a few days later; do not drop it at once.

Normal and long term

Normal and long term

Duration
From about week 8
Texture
Balanced, small plate

Balanced eating on a small plate: protein first, then vegetables, grains last. Lifelong vitamin and mineral supplements and yearly lab follow-up continue.

On the plate at this stage

  • Protein + vegetables + a little grain on a small plate
  • 3 main meals and 1–2 snacks a day
  • Fluids 30 min before and after meals

Avoided at this stage

  • Drinking with meals
  • Sugary and fatty snacks

Yearly tests follow B12, ferritin, vitamin D and other values your doctor requests.

Durations are general information; they vary with the type of operation and your surgical team's protocol. Your team's written advice always takes priority.

Bariatric surgery nutrition page

Dietitian giving a nutrition seminar to staff in a meeting room

Nutrition seminars for companies

From desk-based staff to shift teams; built around the real conditions of the working day, with one-page summaries.

  • Blood sugar and the working day60 min + 15 min Q&A
  • Eating for heart health60 min
  • Nutrition for shift workers75 min
  • Health day: body compositionHalf or full day
  • Canteen menu consultancy3 months

Fees

We do not hide our fees. The length and scope of each appointment are listed on every row; cancellation and payment terms are on the fees page.

All fees and appointment terms
Fees
servicelengthfee
Pre-callWe talk about which area and dietitian suit you; no health information is asked.15 min · phoneFree
First visitA detailed assessment with your lab results, medication and daily routine.60 min · in person3.500 TLVAT included
Follow-up visitPlan update and measurement.30 min · in person2.000 TLVAT included
Online visitFrom anywhere in Türkiye; you share your lab results beforehand via a secure link.45 min · video2.750 TLVAT included
12-week clinical nutrition programmeStructured follow-up for diabetes, insulin resistance, PCOS, thyroid and cholesterol.1 first + 6 follow-up visits14.500 TLVAT included · 2 instalments
Bariatric surgery nutrition follow-upVisits during preparation and at every transition stage.Before surgery + first 6 months19.500 TLVAT included · 3 instalments

Frequently asked questions

All questions
What should I bring to the first visit?
Bring lab results from the last three to six months, a list of your medication and supplements and any referral note from your doctor. Comfortable clothes make the body composition measurement easier.
Do I need a doctor's referral?
Not for most areas. For kidney disease and bariatric surgery follow-up, however, we work with a referral and the limits set by your doctor or surgical team.
Do you interpret my lab results?
We do not diagnose or interpret results in place of your doctor. In the consultation we discuss the nutrition-related aspects of your results and build the plan accordingly. Diagnosis and treatment belong to your doctor.
Can I have blood tests at the centre?
No blood is drawn at our centre. Have the tests your doctor requests at your usual laboratory and bring the results to the visit.
Can I enter my own value in the lab test guide?
No. The guide gives general information only; no values are entered, nothing is calculated or interpreted and no data is sent to the server.
Are fees covered by insurance?
Dietitian visits are outside most private health insurance; some complementary policies pay partially. An invoice is issued after the visit; we suggest checking with your insurer.