P4

Cat.No.：

VD116Q

Name：

Canine Progesterone P4 Test

Target：

Specs：

10 tests/box

Storage:

2-30 °C

Stability:

24 Months

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Product Overview

The Canine Progesterone P4 Test is a lateral flow immunochromatographic assay designed for the quantitative detection of the concentration of progesterone (P4) in canine serum or plasma, supporting estrous cycle staging and breeding management.

Suitable for:

🐕 Dogs at risk of infection 🏥 Veterinary clinics & animal hospitals 🐾 Rescue centers & breeding kennels 🔬 Field screening

Key Features

🎯 Quantitative result	Analyzer-computed concentration displayed on the VETSEE G2 screen in ng/mL
🧬 Target	Progesterone
📊 Detection range	0.5-50 ng/mL
⚡ Fast result	About 15 minutes
🔬 Highly selective	Target-specific capture and gold-labeled detector antibodies
❄️ Room-temp storage	2–30 °C, no cold chain needed
📦 Flexible packs	10T kit available

Detection Principle

The test is based on a competitive lateral flow immunochromatographic assay. The test card features a testing window with an initially invisible T (test) zone and a C (control) zone. When the treated sample is applied, the liquid flows laterally across the NC membrane; the target analyte in the sample competes with the labeled analyte component on the test zone for binding to the limited gold-conjugated antibody sites, so the signal intensity of the T line correlates with the analyte concentration in the sample. The optoelectronic system of the VETSEE G2 Dry Immunoassay Analyzer analyzes the signal intensity of the T line against the lot-specific calibration curve (imported by scanning the QR code), and the concentration is displayed directly on the analyzer screen. The C line indicates a valid test result.

Test Procedure

1	Equilibrate — allow all components to equilibrate to room temperature (15–25 °C) for 10 minutes before use.
2	Turn on the analyzer — power on the dry immunoassay analyzer and use its scanner to scan the QR code on the inner side of the box lid or the bag label to import the calibration curve of this lot.
3	Load the test card — remove a P4 test card from the foil pouch, position it front side up with the sample well oriented towards the outside of the test card slot, and insert the card into the slot.
4	Prepare sample — use a pipette to add 100 μL of assay buffer into a centrifuge tube, then add 50 μL of serum or plasma specimen into the same tube and mix thoroughly to obtain the treated sample.
5	Apply sample — use a pipette to add 100 μL of the treated sample into the sample well and push the test card to the farthest end of the slot.
6	Run the test — tap [STANDARD TEST] on the screen; the P4 concentration will be displayed automatically at the end of the countdown, about 15 minutes later.

* The result is calculated and displayed by the VETSEE G2 Dry Immunoassay Analyzer (Standard Test); refer to Result Interpretation for the reference range.

Result Interpretation

Concentration	Interpretation
≤ 1.0 ng/mL (≤ 3.2 nmol/L)	Anestrus or proestrus; re-test after 2-4 days.
1.0-2.0 ng/mL (3.2-6.3 nmol/L)	Pre-LH surge; re-test after 2-3 days.
2.0-3.0 ng/mL (6.4-9.5 nmol/L)	LH surge; re-test after 1-2 days.
3.0-5.0 ng/mL (9.6-15.8 nmol/L)	Post-LH surge, pre-ovulation; re-test after 1-2 days.
5.0-12.0 ng/mL (15.9-38.2 nmol/L)	Ovulation; confirm the fertile period.
> 12.0 ng/mL (> 38.3 nmol/L)	Diestrus.

The P4 concentration is displayed directly on the screen of the analyzer (detection range 0.5-50 ng/mL); refer to the reference range in practice. When the analyzer displays "invalid", it is recommended to review the operating procedures and perform another test.

* Suggested reference ranges were established based on a certain region; because of varietal and regional differences, each laboratory should establish its own reference range. For in vitro veterinary use only — results should be considered alongside other clinical information.

Specifications

Cat. No.	VD116Q
Target	Progesterone
Specimen	Canine serum or plasma
Format	Lateral flow test card (quantitative)
Reading time	About 15 minutes (automatic countdown)
Detection range	0.5-50 ng/mL
Kit contents (10T)	10 P4 test cards, 10 vials of assay buffer, 20 pipette tips, 10 centrifuge tubes, 1 label of QR code (calibration curve), 1 instruction for use
Pack size	10 tests / box
Storage	2–30 °C
Shelf life	24 months

Storage & Stability

Store the test kit at 2–30 °C in a dry place, away from direct sunlight and humidity. Do not freeze. The kit is stable for 24 months from the date of manufacture when stored under recommended conditions.

FAQ

Q	Which specimens can be tested?
A	Canine serum or plasma.
Q	How long until the result?
A	About 15 minutes after starting the test on the analyzer.
Q	Do I need an instrument?
A	Yes — the VETSEE G2 Dry Immunoassay Analyzer is required; the concentration is calculated and displayed automatically.
Q	How is the concentration reported?
A	The analyzer displays the concentration directly on its screen (detection range 0.5-50 ng/mL); compare it with the reference range in Result Interpretation.
Q	Can the test card be reused?
A	No. Each card is for single use only.
Q	What does the C line mean?
A	The C (control) line must always appear after sample application, indicating proper test performance. No C line = invalid test, repeat.