Ovulation Prediction via LH Detection
The Seratec LH Test is a rapid lateral flow immunochromatographic assay for the qualitative detection of luteinising hormone (LH) in human urine. LH is a glycoprotein hormone secreted by the anterior pituitary gland that plays a central role in regulating the female reproductive cycle.
The LH surge — a rapid, transient elevation in urinary LH concentration occurring in the late follicular phase — is the most reliable non-invasive predictor of imminent ovulation. The LH surge typically precedes ovulation by approximately 24 to 36 hours, defining the most fertile period of the menstrual cycle.
Delivering results within 3 to 5 minutes from a urine sample, the Seratec LH Test provides a rapid, straightforward method for daily ovulation monitoring without the requirement for laboratory instrumentation or specialist training.
Manufacturer: Seratec (seratec.com) · Australian Distributor: Advanced Biotech Pty Ltd
6-Step Testing Process
The Seratec LH Test is designed for daily monitoring during the expected LH surge window, following a straightforward urine collection and test procedure.
Determine Testing Start Day
Calculate the recommended start day based on average menstrual cycle length. For a typical 28-day cycle, commence around day 10–11. Refer to the IFU cycle-length table for your cycle.
Urine Sample Collection
Collect urine at the time of day specified in the IFU. Follow guidance on fluid intake prior to collection to avoid excessive dilution, which may reduce LH concentration.
Test Application
Apply the urine sample as directed — either by dipping the test strip or applying to the sample well. Note the time and allow the test to develop for the period specified in the IFU.
Lateral Flow Migration
LH in the sample migrates along the nitrocellulose membrane. The anti-LH antibody conjugate captures LH, and the complex migrates to the test line region for detection.
Result Reading
Read the result at 3–5 minutes. A test line equal to or darker than the reference line is positive — the LH surge has been detected. Continue testing on subsequent days if negative.
Record & Act on Result
Record daily results to track the LH surge pattern. On a positive result, the fertile window is indicated and conception-directed activity or clinical procedures may be timed accordingly.
Reading Your LH Test Result
LH Test results are based on the intensity of the test line (T) relative to the reference line (R). Refer to the Instructions for Use for the illustrated interpretation guide.
Test line equal to or darker than reference line
The LH surge has been detected. Ovulation is expected within approximately 24 to 36 hours. This indicates the peak fertile period — act accordingly per your fertility monitoring protocol. Testing for the current cycle may cease on a positive result.
Test line absent or lighter than reference line
The LH surge has not been detected on this day. Continue testing on the following days as directed in the IFU. A faint test line does not constitute a positive — only equal or greater intensity is positive.
No reference line appears
The test is invalid and cannot be interpreted. Repeat testing with a new device, ensuring correct sample volume and application procedure are followed. Consult the IFU troubleshooting guide if invalid results recur.
Important: The LH Test predicts the timing of ovulation — it does not confirm that ovulation has occurred. Women with PCOS may experience multiple LH surges or elevated baseline LH. Post-menopausal women have chronically elevated LH and results may always appear positive. For in vitro diagnostic use only.
Clinical & Personal Applications
Clinical and personal settings where the Seratec LH Test supports fertility monitoring and ovulation prediction.
Natural Fertility Monitoring
Daily monitoring during the expected ovulation window to identify the LH surge and predict ovulation timing, supporting natural conception during the most fertile days.
Assisted Reproduction Timing
Detection of the LH surge to assist with precise timing of IUI, natural cycle monitoring, and other assisted reproductive treatment protocols.
Fertility Clinic Support
Home or office-based LH monitoring to complement serum hormone testing — providing daily surge detection data to inform clinical decision-making.
Cycle Tracking & Awareness
Supporting women who wish to understand their menstrual cycle and ovulation pattern as part of a broader fertility awareness programme.
Healthcare Professional Setting
Point-of-care ovulation testing in general practice, gynaecology, and fertility clinic settings where rapid, instrument-free LH surge detection is required.
High-Volume Diagnostic Screening
Bulk supply for fertility clinics, reproductive health services, and diagnostic laboratories requiring a validated, standardised LH lateral flow assay in multi-pack formats.
Seratec LH Test — Technical Specifications
Full technical specification for the Seratec LH Test lateral flow immunochromatographic assay.
| Parameter | Specification |
|---|---|
| Product name | Seratec LH Test |
| Test format | Lateral flow immunochromatographic assay (LFA) |
| Detection format | Qualitative |
| Target analyte | Luteinising hormone (LH) |
| Clinical application | Ovulation prediction — detection of the LH surge in urine |
| Sample type | Human urine |
| Result time | 3–5 minutes (refer to IFU for validated read window) |
| Result interpretation | Visual — test line (T) intensity relative to reference line (R) |
| Positive result | Test line equal to or darker than reference line — LH surge detected |
| Negative result | Test line absent or lighter than reference line — LH surge not yet detected |
| Invalid result | No reference line visible — repeat test required |
| Ovulation prediction | Ovulation expected approximately 24–36 hours after LH surge detection |
| Storage temperature | 2–30°C (refer to product label and IFU) |
| Regulatory category | In vitro diagnostic — for in vitro diagnostic use only |
| Manufacturer | Seratec |
| Australian distributor | Advanced Biotech Pty Ltd |
| Contact | admin@advancedbiotech.com.au · 0413 654 860 |
Frequently Asked Questions
Common questions about the Seratec LH Test for ovulation prediction and fertility monitoring.
Product Documents
Product documentation for the Seratec LH Test. Contact Advanced Biotech to request the Instructions for Use and product literature.
For in vitro diagnostic use only. The Seratec LH Test is an in vitro diagnostic medical device intended for the qualitative detection of luteinising hormone (LH) in human urine as an aid to identifying the time of ovulation. It is not intended for the diagnosis, treatment, or monitoring of any clinical condition. Results should be interpreted in accordance with the Instructions for Use and in the context of clinical and personal history where appropriate. The LH Test does not confirm that ovulation has occurred and is not a substitute for medical advice regarding fertility. Consult a qualified healthcare professional if fertility concerns exist. Australian Distributor: Advanced Biotech Pty Ltd — admin@advancedbiotech.com.au — 0413 654 860.
Enquire About the Seratec LH Test
Contact Advanced Biotech Pty Ltd to request pricing, pack sizes, availability, and technical documentation for the Seratec LH Test in Australia.