- Female
- 26 Years
- 29/01/2025
Do I really need to fast before getting tests for vitamin B12, vitamin D, CBC, and thyroid? I was told to get these because I'm dealing with hair fall, but I'm not sure if fasting is necessary. Can you clarify this for me?
Answered by 1 Apollo Doctors
The needle-like stomach pain could be due to gas, acid reflux, food poisoning, or stress. To alleviate the discomfort:
Self-Care
- Stay hydrated: Drink plenty of water.
- Avoid triggers: Steer clear of spicy, fatty, or heavy foods.
- Over-the-counter relief: Try antacids or acid reducers like Tums, Rolaids, or Zantac.
When to Seek Medical Attention
- Severe pain: Unbearable or worsening pain.
- Vomiting: Vomiting blood or severe vomiting.
- Fever: High fever (over 101.5F).
- Abdominal tenderness: Stomach tenderness to the touch.
Dr. Anshul Suggests...
Consult a Dermatologist
Answered 04/07/2025
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For your tests related to hair fall, here are some key points to know about fasting requirements:
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Vitamin B12 and Vitamin D tests: Generally, you do not need to fast before these blood tests. They can be done at any time of the day.
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Complete Blood Count (CBC): No fasting is required for a CBC test.
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Thyroid function tests: These also do not require fasting.
It's always a good idea to follow any specific instructions given by your healthcare provider or the lab. If you are taking any medications or supplements, mention them before the test.
If you have any other concerns or symptoms, discussing them with your doctor will help tailor the testing and treatment plan effectively.
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Do I need to fast for vitamin B12 test? Answered 20/08/2025
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Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.