1. Home
  2. Consult with a doctor
  3. Which blood tests require fasting

Which blood tests require fasting

Good morning. Am I required to go for morning fasting to give a blood sample for thyroid profile? Also can I take my thyroid medicine before the test or not? Thanks.

556 Views v

Fasting is not necessary according to the recent studies. Taking thyroid medicine before the test will not affect the results, so you can definitely take it. ...  Read More

For Serum calcium blood test fasting required....? Please confirm, appreciate your efforts..,...,...

142 Views v

Yes For better results ...  Read More

Didn't find the answer you are looking for?

Talk to experienced doctor online and get your health questions answered in just 5 minutes.

doctor profile image doctor profile image doctor profile image doctor profile image +169
Consult with a doctor
Online now

My mother had to get some blood tests done. They were fasting glucose, hba1c, cbc, iron, tibc, vit B12 and serum creatinine. All these were ndone while fasting. Fasting won't affect the serum creatinine and iron levels right?

188 Views v

You are right Fasting is required for Fasting glucose only ...  Read More

Generally once had blood tests like thyroid etc etc... how much time gap should we give to test again...??? if reports is normal... 2 months // 3 months // (or) 6 months...??? Once in how many days blood tests are required again...???

610 Views v

This is a very subjective view and depends on your treating doctor. Ideally in an abnormal thyroid test a wait of upto 3 to 6 months is the usual norm, whereas in a normal report it would be a year. E ...  Read More

I and my partner are planning on having a baby. However, I am not sure if I am at my best health. There are no problems as such with me and my period cycle, but since I was looking through some info, I would like to know if it is necessary to get prolactin blood test fasting?

1808 Views v

No it's not ...  Read More

Please suggest What all blood tests should I do before visiting a diabetologists for a quick comprehensive check up. I want to make sure my insulin and glucose levels are normal.

203 Views v

U need to do sugar parameters such as FBS PPBS HBA1c for basic sugar test. If not done recently will need to lipid profile, liver function test, albumin:creatinine ratio, ecg, cbc, urine routine and r ...  Read More

Is fasting required for VitaminB -12 blood Test?????????????????????????????????????????????????????

107 Views v

No ...  Read More

Whether fasting is required for TSH, FSH, LH, free testesterone and total testesterone tests? Or they can be done after 4 hours of eating?

194 Views v

Early morning ...  Read More

Hello mam My sister marriage on 13 may 2022 recently and last 20 days ago she became early pregnant Today she went hospital with her husband and doctor written some blood tests and scan might be may I know whether the blood tests like thyroidAnd pregnancy profile and all Attached above tests details pls confirm this is required now or later li

...

62 Views v

Yea get these tests done now ...  Read More

I was prescribed to take TSH ,fT3,fT4.. Does these tests require fasting samples??...pls help

202 Views v

Yes. Fasting sample is mandatory ...  Read More

Hi my age is 26, sometimes iam feeling shortness of breath and I want to check how the lungs are. But not sure what tests I have to go through to check it. Can anyone pls suggest one best and cheapest test to check the lung function

61 Views v

Spirometry ...  Read More

I M 61 YEAR OLD FEMALE. MY FAMILY HISTORY HAS BOTH MY FATHER AND MY SISTER ARE HIGH DIABETIC MY HBA1C LAST YEAR WAS 6 AND MY FASTING INSULIN WAS 13.54 I WAS ADVICED TO CHANGE LIFESTYLE I EXERCISED AND TODAY I DID BLOOD TEST..PLEASE ADVICE IS THIS NORMAL WHAT MUST I FURTHER DO TO PREVENT DIABETES

76 Views v

No sweets ...  Read More

Does TSH and HbA1c need fasting or empty stomach? I am planning to do blood tests for TSH and HbA1c. Do these two tests require fasting or empty stomach? Can they be done at any time of the day? Is it okay if I eat food before the test? Please explain in simple words.

64 Views v

Any time ...  Read More

Dear doctors, I recently tested positive for diabetes with 309mg of fasting blood sugar. Doctor prescribed medicine and doing walking physical activities for last one month. Today when i checked fasting blood sugar using one touch glucometer it has given 152mg. Immediately i went to lab and tested and the result showing 102mg dl and post meal sho

...

213 Views v

Check out blood sugar levels at fasting and 2 hours after Breakfast Lunch and dinner for 5 days and see if the sugar levels are in range or not Then discuss with the reading ...  Read More

Hello Doctors, last month I have tested diabetic with fasting blood sugar of 309 and then doctor prescribed me one tablet daily and today I tested my fasting blood sugar and it is 136. Can you please help me understand is it normal or what should be the values for diabetics? Like fbs and post meal? Thank you

207 Views v

Your current fasting sugar of 136 after starting treatment is a good improvement from 309, showing that your medicine and lifestyle are helping. For a person with diabetes, the general goal is a fast ...  Read More

I had gestational diabetes 2 years ago. Post delivery I am not taking medicines and monitoring sugar periodically.Most of times I am getting fasting levels between 98-106.My pp levels 100-120 and HbA1c in last six months is 5.1 and 5.3 . is there any concerns due to high fasting values. Please advise

43 Views v

If you want to discuss your problem in more detail, feel free to message me on Whats App at nine one one nine two five five six nine nine for a free detailed consultation ...  Read More

In 71 yrs female with early stage compensated liver cirhosis, asymptomatic, no alcohol use, prediabetes, hypertension. LFTs, IgG are moderately elevated. ANA+. No ascites/jaundice. Biopsy not done. ?AIH?PBC How often repeat blood tests (LFT, RFT, PTINR,CBC) are advisable? Is every 3 months compulsory? Also can cirrhosis cause increase d-dimer?

...

30 Views v

Every 3 month - Cbc, lft ,RFT, INR 6 month - USG abdomen ,AFP afp as per protocol 3 months also followed Ogd - every year ...  Read More

What are the tests required for pid confirmation ? Please do let me know all the tests required for the same!!

92 Views v

Hi good afternoon Thnxs for your question I need complete details regarding ur case so I can help you For further guidance on it and medicine Use my online consulting link so that we can discuss ur qu ...  Read More

What are the blood tests and medicine for premature graying of hairs. Or do I need to take melanin producing meds.

270 Views v

No need to worry.specific treatment is available.it depends on severity of the disease . Complete medical history is required.. Pls do online consultation with Dermatologist for detailed prescription ...  Read More

My blood fasting sugar is 52.. And hbA1c is 5.10..kindly suggest why my fasting sugar is low..and my total cholesterol is 233

119 Views v

Might be error. Hba1c is normal. Change life style n diet plan drastically to control cholesterol n all body para meters. Rosuvast20 one at night for 3 weeks. ...  Read More

My mother 66years old was just discharged from hospital after recovering from a UTI kidney infection. Post that she was told to continue antibiotics Intravenous(Ertapenem Eczas) once a day for one week and follow up with the doctor with fresh CBC, CRP, KFT and USG KUB. My question is how soon after completing the antibiotics course should she take

...

187 Views v

It is better to do after 2-3 days of stopping the antibiotics ...  Read More

I have been diagnosed with SLE since 18 years and on hydroxy chloroquine once daily. No organ involvement till now. Starting symptoms were photosensitivity, mouth palette ulcers, frequent fevers, fatigue and skin boils in between which used to be pus filled. Ana positive. Esr was high. But never had joint pain ,no organ involvement till now. After

...

126 Views v

Can help you, kindly consult and provide detailed history for proper diagnosis and further management ...  Read More

Hello Doctor, My fasting blood sugar is 95 and what it means? Is this healthy or non healthy? What is the normal blood sugar range? Please advice Thanks

1099 Views v

It's in the normal range, check your HbA1c to confirm if you are Pre-diabetic ...  Read More

What tests are required before cardiac angiography ? What is better ct scan angiography or conventional angiography

55 Views v

It depends on your symptoms ...  Read More

Need to know the tests required for small intestine..as having bloating and gastric issues since last year ..blood tests or lab tests which are necessary??

176 Views v

Do connect and consult ...  Read More

Dear Doctor, My 7 year old boy often complaints about back pain and head ache. He is not interested in almost anything he does, his enthusiasm for doing anything is short lived. Pls suggest as to which tests should we be doing for him, and make necessary changes in his lifestyle so that he can excel in his life. And he is happy. Thanks and Regard

...

40 Views v

Hi, is it like, when he complains of headache or backache, he is not interested in anything? Or is it not related to these symptoms? Is he addicted to mobile phones, TV, etc? ...  Read More

Hello Doctor, I have been feeling a bit tiredness over the past one week, so I took complete health check today. Out of all the blood reports, I would like to understand blood sugar test reports. When searched online, looks like the report shows a bit elevated levels in the fasting blood sugar report. Could you please help understand if there i

...

220 Views v

It’s normal blood sugar levels ...  Read More

I have hypothyroidism and been on medication thyroxine for few months. I keep checking my thyroid every 2 months. Is fasting really required for thyroid blood test?

119 Views v

yes ...  Read More

Hello doctors, I recently got my blood test done. My fasting blood sugar level is 100, HbA1c is 4.5 and average blood glucose is 82 , please suggest. Thank you.

228 Views v

Can help you, kindly consult and provide detailed history for proper diagnosis and further management ...  Read More

Today I have done my fasting blood sugar and its shows 107.9 Exactly one month ago I had done my fasting blood sugar it showed 114 so my blood sugar has reduced to 107.9. So is this range normal or I have to reduce it more I have not taken any medicine I only walked half and hours daily for one month. Plzz recommend next steps to reduce less than

...

561 Views v

Its normal ...  Read More

Related Topics:

Blood tests to check ovulation Common blood tests for fatigue Gastroenterology blood tests
Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.
Get unlimited online consultations
Internet is not a doctor

Internet is not a doctor

Consult with real doctors online

  • Private consultation
  • 5-min response
  • Free follow-ups

The question asked on this page is a free question. You can ask a free health question by downloading the Practo app.

Recently Asked Questions

Fasting required or not

 216 Views
For Serum electrolyte and serum calcium test fasting required? Can you please clarify ... ... ... ...

Basic tests required for 27 female

 39 Views
Hi, I am getting air from my mouth continuously. Some days, I will be alright and on some other days, I w ... Read More

Fasting sugar

 234 Views
Today I have tested fasting blood sugar and the result is 105 how to reduce it does required any medicine

Does Hba1c and abg require fasting?

 141 Views
Hba1c is 8% and abg is 183 but test taken after 1 hour drinking tea is am diabetic or not does hba1 and ... Read More

Fasting blood sugar

 1000 Views
My father fasting blood sugar is 105 is this dangerous? Is it required to take test without fasting? Plea ... Read More