Product research book · Urine output jar · Plastic · 250 mL
Know your number. Track your kidneys' daily output at home.
A clear, graduated plastic jar that turns "I think I went less today" into a recorded millilitre count you can compare against medical reference ranges, track over days, and show your doctor.
Tattwas Urine Output Jar · Printed mL graduations up to 250 mL · Shatter-safe plastic · Pouring spout, steady handle, wide mouth · ₹75
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0.5 mL/kg/hinternational threshold below which low output becomes a kidney warning (KDIGO)
800–2,000 mLnormal adult daily urine volume on about 2 L of fluid (MedlinePlus)
9 in 10US adults with chronic kidney disease who don't know they have it (CDC)
2.5 Ldaily urine target for people prone to kidney stones (AUA)
02 · Above the fold
Six reasons it earns a place in your bathroom cabinet
📏
Measure, don't guess
Every medical threshold for urine is written in millilitres. Read the exact volume at eye level instead of relying on impressions like "a lot" or "not much".
mL⚖️
Know your personal floor
Your minimum healthy daily output depends on body weight. Multiply your weight by 12 and you have the number to stay above — 720 mL for a 60 kg adult.
KDIGO💎
Hit kidney-stone targets
Stone formers are advised to produce at least 2.5 litres of urine a day. That target is written as output, so only measuring output confirms you've reached it.
AUA 2014📉
Notice sudden drops early
A sharp fall in volume that doesn't recover with fluids is exactly the early signal clinicians watch for. A daily number makes the change visible.
KDIGO · Kellum🤝
Care for elders with confidence
Older adults often feel less thirst. A simple log helps caregivers catch low intake before it becomes a problem.
Caregivers📝
Better conversations with your doctor
A written daily record is far more useful in a consultation than "I think I'm passing less". Bring numbers, not recollections.
Doctor-readyAt a glance
| Detail | |
|---|---|
| Capacity | 250 mL |
| Material | Shatter-safe plastic |
| Markings | Graduated in mL |
| Design | Pouring spout · steady handle · wide mouth |
03 · The problem in simple terms
Your kidneys report in millilitres. Most people never read the number.
Your kidneys filter your blood many times a day and return almost all of that fluid to your body. The part they don't return — your urine — is one of the very few outputs of an internal organ you can see and measure yourself, every day, at no cost.
Yet almost everyone judges it by feel. The problem is that every medical line connected to urine — the normal range, "too little", "too much", the kidney-stone target — is a specific volume. If you haven't measured, you can't know which side of those lines you're on. That's why hospitals measure urine instead of estimating it. The Tattwas jar brings the same principle home.
Without the jar: "I think I went less today…" — no way to compare with a reference range, small daily changes go unnoticed, vague answers when your doctor asks.
With the jar: "1,380 mL yesterday, 1,420 today." — a real number against a real reference, trends visible across days, a written log your doctor can use.
| Reference point | Volume | Source |
|---|---|---|
| Normal adult daily range (about 2 L fluid intake) | 800–2,000 mL | MedlinePlus |
| Minimum most adults produce in 24 hours | About 500 mL | MedlinePlus |
| Low-output warning threshold | Below 0.5 mL per kg per hour | KDIGO |
| Excessive urination (polyuria), adults | More than 2.5 L per day | MedlinePlus |
| Target for kidney-stone prevention | At least 2.5 L per day | AUA guideline |
04 · Visual explanation
From a vague impression to a number you can act on
1
Collect
Pass urine into the jar.
2
Read
At eye level, on a flat surface.
3
Record
Write the time and the volume.
4
Total & compare
Add up 24 hours and check it against your personal range.
Your personal floor: weight (kg) × 0.5 × 24
0.5 mL per kg per hour is the international KDIGO threshold for low urine output. Over a day it simplifies to weight × 12. For a 60 kg adult: 60 × 12 = 720 mL.
The reference level of 1 mL/kg/h (weight × 24) generally reflects good hydration in a healthy adult.
| Body weight | Minimum floor | Reference level |
|---|---|---|
| 50 kg | 600 mL/day | 1,200 mL/day |
| 60 kg | 720 mL/day | 1,440 mL/day |
| 70 kg | 840 mL/day | 1,680 mL/day |
| 80 kg | 960 mL/day | 1,920 mL/day |
| 90 kg | 1,080 mL/day | 2,160 mL/day |
Daily output zones for a 60 kg adult: below 720 mL — below floor · 720–1,440 mL — low–normal · 1,440–2,500 mL — well hydrated · above 2,500 mL — check the cause (polyuria). Kidney-stone formers aim for at least 2,500 mL under medical advice. Illustrative home guidance, not a diagnostic tool.
05 · Concise, with links to full studies
What the evidence says — and what it doesn't
🏥
A medical criterion, not folklore
The international kidney guideline uses low urine output — below 0.5 mL/kg/h for 6 hours or more — as one of only two criteria to define acute kidney injury.
KDIGO AKI 2012⚠️
Low output that persists carries real risk
In more than 32,000 critically ill patients, classifying kidney injury by urine output identified people at higher risk of dialysis and death — greatest when low output lasted longer.
Kellum, JASN 2015💎
Stone prevention is measured in output
People who form kidney stones are advised to drink enough to produce at least 2.5 litres of urine a day — a target only measurement can confirm, especially in hot climates.
AUA 2014📈
Higher urine volume, slower kidney decline
In 2,148 adults in Ontario followed for about six years, those with higher daily urine volumes showed slower decline in kidney function.
Clark, CJASN 2011🚰
…but extra water is not a proven treatment
A randomised trial coaching people with chronic kidney disease to drink more water did not significantly slow decline over one year. People with CKD should follow their nephrologist's fluid advice.
CKD WIT, JAMA 2018💧
Too much can matter too
Passing more than about 2.5 litres a day without drinking unusually much is the medical definition of polyuria and can be an early sign of diabetes.
MedlinePlusAn honest limit
The jar tracks daily volume, hydration and sudden changes. It cannot detect slow, chronic kidney disease — that needs blood (creatinine, eGFR) and urine albumin tests. Use it as a daily companion to an annual check-up, not a replacement.
06 · Features and comparison
A simple tool, designed to be used every day
🛡️
Shatter-safe plastic
Used where floors get wet and hands get slippery. If it slips, it won't shatter into sharp pieces that could cut a foot or leg.
📏
Graduated in mL
Read the volume directly at eye level instead of estimating — the same principle hospitals use.
🫗
Pouring spout
Empty cleanly into the toilet without splashing, every time.
✋
Steady handle
A firm, hygienic grip — helpful for elders and for caregivers assisting a family member.
⭕
Wide mouth
Easier collection for everyone, including women and caregivers.
📚
Research-backed guidance
Every jar is supported by the Tattwas Product Research Book — the method, the ranges and the sources.
| Tattwas jar | Guessing | Glass kitchen jug | Hospital urometer bag | |
|---|---|---|---|---|
| Gives an exact mL reading | ✓ | ✕ | ✓ | ✓ |
| Made for daily home use | ✓ | ✓ | ✓ | ✕ clinical setup |
| Kept only for urine, never food | ✓ | — | ✕ shared with kitchen | ✓ single-use |
| Safe if dropped on a wet bathroom floor | ✓ plastic | — | ✕ can shatter | ✓ |
| Spout and handle for clean emptying | ✓ | — | ✓ | Drain tap |
| Weight-based ranges & method included | ✓ | ✕ | ✕ | Nurse-led |
Comparison reflects general product categories, not specific brands.
07 · The 24-hour method
Measure a full day at home in four steps
Adapted from the standard 24-hour collection method of the US National Library of Medicine — measuring and discarding rather than storing.
1
Start
On waking on day one, pass urine into the toilet as usual and note the time. This urine is not counted.
2
Measure every time
For the next 24 hours, pass all urine into the jar. Read the level at eye level on a flat surface, write it down, then empty and rinse.
3
Finish
On waking on day two, at the same time you started, pass urine into the jar and record it. This one is counted.
4
Add it up
The total is your 24-hour output. Compare it with your personal range in chapter 04.
🫙
Over 250 mL in one go?
Pour off at the 250 mL line, note it, then measure the rest and add the two.
📅
Measure more than once
One day reflects that day's weather and drinking. Two or three days give a truer picture.
☕
Note the context
Heat, exercise, tea, coffee, alcohol and diuretic medicines all change volume.
🔁
Missed one?
The total will be low. Start again rather than estimate.
Care & hygiene
Keep the jar for urine measurement only, clearly labelled — never for food or drink. Rinse with cold water after each use and wash daily with soap and warm water. Wash hands before and after. Store upright and dry, away from kitchen items. Replace the jar if the markings fade or the plastic becomes scratched and hard to clean.
08 · From people who measure
Who it's for
- History of kidney stones — confirm you reach the 2.5 L/day urine target.
- Hot weather or outdoor work — see when sweat losses are outpacing what you drink.
- Recovering from diarrhoea or vomiting — rising output confirms rehydration is working.
- Caring for an elderly family member — a log catches low intake early.
- Your doctor has asked you to track output — accurate numbers instead of recollection.
- Diabetes, high BP or family history — a daily companion to your annual kidney tests.
09 · Frequently asked questions
Questions, answered plainly
How much urine is normal in a day?
For most adults drinking about 2 litres of fluid, 800–2,000 mL in 24 hours.
How do I find my own minimum?
Multiply your weight in kg by 12. Staying consistently below that number, even after drinking more, is a reason to see a doctor.
Can the jar tell me if I have kidney disease?
No. It tracks volume. Chronic kidney disease is diagnosed with blood (eGFR) and urine albumin tests — ask your doctor for both.
Should I just drink more water to protect my kidneys?
Good hydration is sensible, but extra water is not a proven treatment for kidney disease. If you have CKD, follow your nephrologist's fluid advice, which is sometimes a restriction.
Does urine colour matter too?
Yes. Colour shows concentration in the moment; the jar shows total volume across the day. Pale straw colour with a total inside your range is the pattern to aim for.
Why plastic instead of glass?
A bathroom floor is often wet. If a glass jar slips and breaks, the sharp pieces can cut a foot or leg. Shatter-safe plastic removes that risk.
10 · Expandable study library
The studies behind every number
References
- KDIGO Clinical Practice Guideline for Acute Kidney Injury (2012). Defines and stages AKI using urine output below 0.5 mL/kg/h, tied to duration (6–12 h, 12 h+, 24 h+). Kidney Int Suppl 2012;2(1):1–138. kdigo.org
- Kellum JA et al. Classifying AKI by urine output versus serum creatinine level. 32,000+ critically ill patients: urine-output criteria identified higher risk of dialysis and death, especially with persistent low output. J Am Soc Nephrol 2015;26(9):2231–2238. doi
- MedlinePlus — Urine 24-hour volume; Decreased urine output. Normal range of 800–2,000 mL/day on about 2 L intake; standard 24-hour collection method. US National Library of Medicine. medlineplus.gov
- MedlinePlus — Urination, excessive amount. Polyuria defined as more than 2.5 L/day in adults; possible early sign of diabetes. medlineplus.gov
- KDIGO 2012 Guideline for the Evaluation and Management of CKD. CKD is defined by reduced eGFR or markers of kidney damage for three months or more — not by urine volume. Kidney Int Suppl 2013;3(1):1–150. kdigo.org
- CDC — Chronic Kidney Disease in the United States, 2023. As many as 9 in 10 adults with CKD do not know they have it. cdc.gov
- Pearle MS et al. Medical management of kidney stones: AUA guideline. Stone formers should drink enough to produce at least 2.5 L of urine per day. J Urol 2014;192(2):316–324. doi
- Clark WF et al. Urine volume and change in estimated GFR in a community-based cohort. 2,148 adults: kidney function declined more slowly with higher 24-hour urine volume. Clin J Am Soc Nephrol 2011;6(11):2634–2641. doi
- Clark WF et al. Effect of coaching to increase water intake on kidney function decline in adults with CKD: the CKD WIT randomized clinical trial. Coached higher water intake did not significantly slow decline over one year. JAMA 2018;319(18):1870–1879. doi
- Armstrong LE et al. Urinary indices of hydration status. Darker urine colour tracked closely with higher urine concentration and dehydration in athletes. Int J Sport Nutr 1994;4(3):265–279. doi
11 · Delivery and support
From our warehouse to your bathroom shelf
| Detail | |
|---|---|
| Courier | Blue Dart, pan-India serviceable pin codes |
| Dispatch | 2–3 working days |
| Delivery | Within 7 days |
| Shipping fee | ₹50 · free on orders of ₹499 and above |
| Packaging | Securely packed for transit |
| Tracking | AWB shared by email / SMS on dispatch |
| Broken or damaged | Replaced within 48 hours |
| All other cases | Not eligible for replacement — personal hygiene product |
Why the hygiene rule
Once used, a urine measuring jar can't be resold safely. Please check your parcel on arrival — if the jar arrives broken or damaged, photograph it and contact us at connect@tattwas.com or +91 95555 91155 (phone / WhatsApp), and we replace it within 48 hours.
When the number means see a doctor
Most unusual readings have an everyday explanation. These don't.
When the number means see a doctor
Your 24-hour total stays below your minimum floor even after drinking more, or falls below about 500 mL in a day.
You pass no urine at all for 12 hours or more — this needs urgent care.
Output is low together with swelling of the legs, ankles or face, or with breathlessness.
You pass more than 2.5 litres a day without drinking unusually much, especially with increased thirst or weight loss.
You see blood in the urine, persistent foam, or have pain, burning or fever.
Colour for concentration, volume for the full picture. Pale straw colour means well hydrated; darker amber means concentrated — drink more. The jar adds what colour can't: the total across the day.
Measure the number. Know your kidneys.
The Tattwas Urine Output Jar — printed mL graduations up to 250 mL, shatter-safe plastic, pouring spout and handle. ₹75.
Add to BasketThis product is a measuring aid for personal use. It is not a medical device and does not diagnose, treat or prevent any disease. Ranges shown are general reference points for healthy adults, not a substitute for professional medical advice. People with kidney disease, heart failure or on fluid restrictions should follow their doctor's guidance.