Longmed Pregnancy Test Cassette — a self-test that detects hCG in urine, with a clear result in 5 minutes and over 99% accuracy.
💊 Principle: detects the hCG hormone in urine ⏱️ How to use: 4 drops of urine, wait 5 minutes 🍽️ Condition: first morning urine is most accurate 📦 Pack: 1 test per box, cassette type ⚡ Highlight: over 99% accurate, ISO 13485 🌡️ Storage: 2-30°C, away from moisture and sunlight
When and how accurate is the Longmed cassette test?
The Longmed Pregnancy Test Cassette detects the hCG hormone in urine to confirm pregnancy at home. Simply drop four drops of urine into the sample well and read the result in five minutes. It is over 99% accurate, can be used from the first day of a missed period, and works best with the first morning urine sample.
🛒 1 test per box · ISO 13485 certified · fast discreet delivery from Intimo Life — see a doctor or pharmacist if the result is unclear
Product Description
The Longmed Pregnancy Test Cassette is a self-testing kit that detects the hCG hormone (Human Chorionic Gonadotropin) in urine, a hormone the body produces after the embryo implants in the uterus. The kit is designed as a cassette with a dropper for collecting urine, so it is easy to use, controls the sample volume precisely, and gives a clear result within 5 minutes. It is ideal for anyone who wants private reassurance at home before seeing a doctor.
📊 Key facts about pregnancy testing:
hCG levels in urine roughly double every 48-72 hours in early pregnancy, so it can be detected from an early stage once a period is missed (source: NHS UK).
Home pregnancy tests are over 99% accurate when instructions are followed and testing is done after a missed period (source: Cleveland Clinic).
Testing with the first morning urine improves accuracy because hCG concentration is at its highest and the urine is not yet diluted.
The Longmed test uses immunochromatography technology, giving an easy-to-read result through coloured lines in the result window.
🏭 Manufacturer: Longmed Group Co., Ltd. · ISO 13485 certified · CE 0197 · USA technology.
⚠️ Note: if you plan to prevent pregnancy after learning the result, ask a pharmacist about a suitable contraceptive such as Justima or Slinda.
Medically reviewed by
Supatcheree A., Pharmacist | Sources: NHS, Cleveland Clinic, WHO
Last reviewed: 2026-07-21
About Longmed Pregnancy Test
What is the Longmed cassette pregnancy test?
The Longmed cassette pregnancy test is a self-testing kit in cassette form that detects the hCG hormone in urine. The kit consists of a test cassette with a sample well for dropping urine and a result window, together with a dropper for collecting urine. When urine containing hCG flows across the test strip, it reacts with the coated antibodies and appears as a coloured line in the Test position.
This cassette-and-dropper format controls the amount of urine more precisely than direct midstream testing, reducing the chance of misreading from too much or too little sample. The cassette also has a spill-guard edge and an easy-to-read result window, so the Longmed test suits anyone who wants clarity, accuracy and privacy when testing at home without a trip to a clinic.
When can the Longmed test be used?
The Longmed test can be used from the first day of a missed period (about 14 days after conception, or 14 days after ovulation), when hCG levels in urine are high enough to be detected clearly. Testing too early, before a missed period, may give a false negative even in a real pregnancy because hCG is still low.
For best accuracy, use the first morning urine, when hCG is most concentrated after building up overnight. If the result is negative but your period still has not arrived, test again after 3-5 days, since hCG doubles every 2-3 days and detection becomes more likely. If you are still unsure, consult a doctor for a confirmatory blood test.
How to use the Longmed cassette test
To use the Longmed cassette test, follow these simple steps:
Wash your hands, then collect urine in a clean, dry cup (first morning urine is recommended).
Tear open the foil pouch, take out the cassette and place it on a flat surface.
Use the dropper to draw urine and place four drops into the sample well, taking care not to overflow.
Wait about 5 minutes for the urine to flow across the test strip.
Read the coloured lines in the result window; do not read after 10 minutes as the result may be inaccurate.
Always check the expiry date and pouch condition before use, use the kit immediately after opening, and use each cassette only once without reusing it. If the urine is cloudy or has sediment, let it settle before drawing the sample.
How to read two lines or one line
The result window of the Longmed test has a C (Control) and T (Test) position. Read the result as follows:
Two lines (C and T): positive, pregnancy is likely; even a faint T line counts as positive.
One line (C only): negative, no pregnancy detected at that time.
No C line: the test is invalid, possibly from too little urine or a degraded kit; retest with a new kit.
The C (Control) line confirms the test is working, so it must always appear, while the T (Test) line indicates that hCG has been found. Two lines with a faint T line usually mean hCG is still low in early pregnancy; retest after 2-3 days with first morning urine to confirm, and if the line darkens it indicates pregnancy.
What time of day is most reliable?
The most reliable time to test is the first morning urine, because it is not yet diluted by fluids and hCG is most concentrated after building up overnight. This matters especially in early pregnancy when hCG is still low, so morning urine reduces the chance of a false negative.
Testing in the evening or at night is possible, but drinking a lot of fluids dilutes the urine and may prevent an already-low hCG from being detected. If you must test during the day or evening, hold your urine for at least 4 hours and avoid drinking too much beforehand so hCG is concentrated enough. Once your period is several days late, hCG is usually high enough to detect at any time of day.
How does the cassette differ from strip and midstream tests?
Pregnancy tests come in several formats that all detect hCG in urine with similar accuracy, differing in how the sample is collected and in convenience:
Cassette (dropper): drop urine into a well with a dropper, precise volume control, an easy-to-read window, fewer misreadings, good for first-time testers.
Strip (dip): dip the strip into a urine cup for a set time, economical but you must time the dip yourself and avoid dipping past the line.
Midstream (pen): urinate directly over the tip, convenient with no cup needed, but harder to control the amount of urine.
In short: choose the Longmed cassette if you want precise sample control and a clear result, choose a strip to save money, and choose a midstream pen if you want speed and convenience without preparing a cup.
How accurate is it and can it give false results?
The Longmed test is over 99% accurate when used correctly and after a missed period. However, false results can still occur in some cases.
False negative: usually from testing too early before hCG is high enough, from diluted urine, or from reading the result too soon or too late.
False positive: rare, and may come from hCG-containing medication (ovulation-inducing drugs), an early miscarriage or ectopic pregnancy, or certain medical conditions.
To reduce false results, follow the instructions, use first morning urine, and read within the 5-10 minute window. If the result does not match your symptoms or a missed period, consult a doctor for a confirmatory blood test.
How should the test be stored?
Store the Longmed test in its sealed foil pouch at room temperature (2-30°C), away from moisture, direct sunlight and heat such as in a car or near a window, because heat and humidity degrade the antibodies on the test strip.
Do not refrigerate the kit and then use it immediately; let it return to room temperature first to avoid condensation inside the pouch. Never use an expired kit or one with a torn pouch, as the test strip may have degraded and give an inaccurate result. Keep it out of reach of children, and use the kit immediately after opening the pouch to prevent moisture from reacting with the strip.
Where to buy the Longmed pregnancy test?
Where to buy the Longmed pregnancy test?
Order online from Intimo Life with delivery across Thailand within 1-3 business days, in discreet packaging that does not identify the product on the parcel.
Generally the earliest reliable detection is about 10-14 days after conception, or from the first day of a missed period. Testing earlier may give a false negative because hCG is still too low to detect. Waiting until your period is due, then using first morning urine, improves accuracy considerably.
hCG (Human Chorionic Gonadotropin) is a hormone produced by the placenta after the embryo implants in the uterus. Its level rises quickly in early pregnancy, so pregnancy tests detect this hormone in urine to indicate pregnancy.
Yes, but it may be less accurate than in the morning, because daytime and night-time urine is often diluted by fluids. If you must test at night, hold your urine for at least 4 hours and avoid drinking too much beforehand.
A faint line still counts as positive and usually means hCG is still low in early pregnancy. Retest after 2-3 days with first morning urine; if the line becomes darker it indicates pregnancy, and you should see a doctor to confirm.
This may be from testing too early or from low hCG. Retest after 3-5 days with first morning urine. If it is still negative and your period is more than a week late, consult a doctor to find the cause.
No type is significantly more accurate, because all detect hCG. The cassette suits those who want volume control and easy reading, the strip is more economical, and the midstream pen is convenient with no cup. Choose what suits you.
You do not need to avoid water all day, but avoid drinking large amounts about 2-4 hours before testing so the urine is not too diluted to detect hCG. First morning urine is most accurate because it is naturally concentrated.
No, because the test strip and reagent may have degraded, giving inaccurate results, both false positive and false negative. Always check the expiry date on the pouch before use and store the kit in a cool, dry place as directed.
Home urine tests are over 99% accurate when used correctly, but a hospital blood test can measure hCG quantitatively and detect pregnancy earlier. To confirm the result or determine gestational age, see a doctor for further testing.
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