1,25-dihydroxyvitamin D (calcitriol)
This test measures 1,25-dihydroxyvitamin D, the biologically active form of vitamin D. It is used to investigate calcium imbalance, kidney disease and...
Before starting IV drips, it’s smart to check the basics that affect safety and how you feel. This profile reviews key health areas often linked to fatigue, inflammation, and metabolic balance.
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2-3 days
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SelectedThe IV Drip Blood Check is a baseline blood test profile designed for people who are having (or considering) IV drips and want to check that core health markers are in a safe, balanced range first.
It looks at your health in broad, practical categories that matter for IV therapy and day-to-day wellbeing:
General blood health
Iron status
Inflammation
Liver health
Kidney health and electrolyte balance
Blood sugar regulation
Cholesterol and cardiovascular markers
IV drips can be helpful for some people, but they’re not “one-size-fits-all.” Your response to IV therapy depends heavily on what your body is already dealing with in the background. This test is about reducing guesswork and avoiding situations where you treat a symptom (like fatigue) without spotting a correctable cause (like iron imbalance, inflammation, or blood sugar issues).
It’s also a sensible safety step. If liver or kidney markers are off, or if your electrolytes are unbalanced, you may be better off correcting the root issue first rather than adding infusions on top. Similarly, if inflammation is elevated, it can explain why you feel run down, and it may point to the need for medical follow-up instead of “more vitamins.”
This profile is especially useful if you:
Feel tired, low energy, or “not recovering” well
Want to start IV drips regularly and want a baseline first
Have dietary restrictions, recent illness, heavy stress, or weight change
Have a history of anaemia/low iron, kidney issues, liver issues, or metabolic concerns
Want objective numbers rather than trial-and-error
Common symptoms / reasons to test may include:
Ongoing fatigue, low stamina, poor recovery
Brain fog, low concentration
Frequent infections or feeling “inflamed”
Dizziness, headaches, or dehydration symptoms
Palpitations or shortness of breath on exertion
Unexplained weakness or low mood
Cravings, energy crashes, or suspected blood sugar swings
Hair shedding or brittle nails (often linked to iron status)
High cholesterol history or family risk
Monitoring while optimising nutrition and supplements
Safer IV drip decisions
Helps identify red flags (or reassurance) before you commit to infusions.
Finds common, treatable drivers of fatigue
Many people feel better by addressing basics like iron balance, inflammation, or metabolic markers.
Supports smarter supplement choices
You can stop guessing and focus only on what you actually need.
Checks liver and kidney “handling capacity”
These organs process and clear many substances, so it’s sensible to confirm stability.
Highlights dehydration or electrolyte patterns
Useful if you feel dizzy, crampy, or “off,” especially with busy schedules or travel.
Shows metabolic direction
Blood sugar markers can explain energy crashes and help guide nutrition strategies.
Adds cardiovascular context
Cholesterol markers support broader health planning, not just “how you feel today.”
Creates a baseline for comparison
If you do IV drips or lifestyle changes, you can measure whether things improved.
Choose your nearest UK clinic
Attend in clinic and a clinician draws your blood sample
Receive your results once ready
Or, if you prefer convenience:
Pay £60 extra and a mobile phlebotomist can come to your home or hotel to take the sample
Both options are UK-wide
Your report is easiest to understand as low, balanced, or elevated. Each category in the profile (blood health, iron status, inflammation, liver, kidney/electrolytes, blood sugar, cholesterol) is interpreted against UK lab reference ranges, which can vary slightly between laboratories.
“Low” usually means something is below the expected range or suggests reduced reserves.
What low results can indicate in this profile:
Lower oxygen-carrying capacity or reduced “buffer” for energy (general blood health patterns)
Reduced iron stores that can contribute to fatigue, weakness, hair shedding, or poor exercise tolerance
Lower electrolyte levels in some cases (which can contribute to cramps, palpitations, or dizziness)
What people usually do next:
Review diet, supplementation, menstrual history (if relevant), and medication use
Correct deficiencies in a targeted way
Consider a repeat check after optimisation if symptoms persist
“Balanced” means results sit within expected ranges.
What balanced results can mean:
Your baseline markers look stable for IV drip planning
If you still feel unwell, the cause may be outside what this profile measures (sleep, stress, infections, gut health, hormones, medications, or other conditions)
IV drips may still be an option, but they’re less likely to be the “missing piece” if everything is already in range
“Elevated” means something is above the expected range or suggests physiological strain.
What elevated results can indicate in this profile:
Inflammation or recent illness/stress signals
Liver marker patterns that may need follow-up (often medication, alcohol, fatty liver, supplements, or other causes)
Kidney/electrolyte patterns consistent with dehydration, strain, or an underlying issue
Blood sugar or cholesterol patterns that support metabolic optimisation rather than “quick fixes”
What people usually do next:
Interpret results alongside symptoms and lifestyle factors
Hydration and nutrition review where relevant
GP or clinician review if markers are significantly raised or persist
Typical UK reference examples (can vary by lab):
CRP (inflammation): often <5 mg/L
HbA1c (non-diabetic range): commonly <42 mmol/mol
eGFR (kidney filtration estimate): commonly ≥90 is normal, 60–89 may be mildly reduced depending on context
ALT (liver enzyme): often around ~10–40 U/L depending on lab
Total cholesterol: many UK services use <5 mmol/L as a general target (individual targets vary by risk)
Simple steps to get your results
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsFollow these guidelines for accurate results
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
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