The rabies titer test: when to draw, which lab, and what a late result costs

What the test is

A rabies antibody titer measures whether a vaccinated animal's blood carries enough neutralizing antibody to prove the vaccine took. The two accepted methods are FAVN and RFFIT; every authority on this page requires a result of at least 0.5 IU/ml. The blood is drawn by your veterinarian after the rabies vaccination and shipped to a laboratory the destination recognizes. The laboratory, the draw date and the vaccination dates are then checked against each other on arrival.

Three things vary by destination: the earliest arrival date after the draw, how long the result stays valid, and which labs are accepted. Get any of the three wrong and the usual remedy is a new draw, which can mean a new wait of months.

The rules, destination by destination

Japan

Draw after the second rabies shot (the same day is allowed). Arrival no earlier than 180 days after the draw, counting the draw as day zero. The result is valid for two years from the draw. Only labs on Japan's designated list count: in the United States, the Kansas State University Rabies Laboratory, or the U.S. Army lab in Texas that Japan lists for U.S. Forces personnel only. A pet that arrives on day 179 is detained for the missing day. USA to Japan.

Taiwan

Draw 90 days to one year before arrival, at a WOAH rabies reference lab or a lab APHIA designates; APHIA's list of October 12, 2026 names Kansas State, Auburn, the University of Missouri and the Department of Defense laboratory in the United States. Seven days of quarantine on arrival, unless the blood was drawn 180 days to one year before arrival and the report reaches APHIA as the waiver requires, in which case no quarantine. If more than a year passes, a second draw taken 91 days to a year after the first can count. USA to Taiwan.

Singapore

Draw at least 28 days after vaccination, and not less than 90 days nor more than 12 months before export, at a WOAH reference laboratory or a lab approved by the authority of a Schedule I or II country. A lapse in rabies vaccination after the draw can void the result. USA to Singapore.

South Korea

Pets 90 days or older need a result of 0.5 IU/ml or higher from an internationally approved lab, with the draw within 24 months of arrival. There is no waiting period after a passing result; compliant pets are released the day they land. Osan's installation guidance names Kansas State and the Defense Food Analysis and Diagnostic Laboratory for U.S. pets. USA to South Korea.

Mainland China

A result of at least 0.5 IU/ml from a lab China accepts, drawn on or after the second rabies shot and within one year of arrival. APHIS lists five U.S. labs: Kansas State, Auburn, Missouri, the CDC's laboratory in Atlanta and the DoD lab at Fort Sam Houston. Without the titer the pet is quarantined for 30 days through a designated port. USA to Mainland China.

The Philippines, from January 1, 2027

Under BAI Memorandum Circular 60, every dog and cat will need a result of at least 0.5 IU/ml by FAVN or RFFIT, drawn at least 30 days after the first rabies shot or at any time if the vaccination is current, from a CDC-listed, EU-listed or government-accredited lab. The result stays valid as long as boosters never lapse. A result below 0.5 IU/ml means revaccination and a new test 14 days later. Until December 31, 2026 no titer is required. USA to the Philippines.

Hawaii

Hawaii's 5-Day-or-Less and Direct Airport Release programs require a passing OIE-FAVN test from Kansas State, Auburn, the University of Missouri or the DoD laboratory (DoD beneficiaries only), with documents received at least 10 days before arrival and 30-day minimums after the test and the last vaccination. This applies to pets flying from Asia to Honolulu as much as from the mainland. US airports for pets.

Dogs entering the United States from a high-risk country

The CDC requires a titer only for a foreign-vaccinated dog that has been in a high-risk country (Mainland China, Thailand, Vietnam, the Philippines, Malaysia and others) in the past six months. The blood must be drawn at least 30 days after the first valid rabies vaccine and at least 28 days before entry, at a lab on the CDC's approved list, and a passing result stays valid as long as the vaccination never lapses. Without it, the dog spends 28 days in quarantine at a CDC-registered facility. Japan, South Korea, Taiwan, Singapore and Hong Kong are not high-risk, so no titer is needed to bring a dog home from them. CDC dog import rules.

Choosing the laboratory

Kansas State University's rabies laboratory is the one U.S. lab that every authority on this page accepts, which is why most of our plans send the sample there. Auburn and Missouri are accepted by Taiwan, China and Hawaii, and not by Japan. The Department of Defense lab is for DoD beneficiaries only, and Japan limits its own Army-lab listing to U.S. Forces personnel. The CDC keeps a separate approved list for dogs entering the United States.

Ask your veterinarian to write the destination on the submission form and to confirm the lab before the needle goes in. A result from the wrong lab cannot be transferred; the only fix is a new draw.

When the result is late

Laboratories take weeks, not days, and a sample can be rejected for a hemolyzed tube or a mismatched chip number. Build that into the plan:

• For Japan and Taiwan, a late result does not move the clock, because the wait counts from the draw date, not the report date. It does delay the paperwork that depends on the number.
• For Korea and Singapore, a late result delays the flight itself, because the report must be in hand before the pet travels. Korea moves fail here more often than anywhere else.
• For the CDC, a late result for a foreign-vaccinated dog means either a later flight or a 28-day quarantine reservation.

When the result is below 0.5 IU/ml

A low result is not unusual in older animals or when the draw was taken too soon after the shot. The remedy is a booster and a new draw. Japan's 180 days and Taiwan's 90 or 180 days then run again from the new draw date. The Philippine rule allows the retest 14 days after revaccination; other authorities leave the interval to your veterinarian. Either way, tell us the same day: the arrival date, the advance notice and the flight all move with it.

The lapse rule

Japan, Korea, Singapore, the Philippines and the CDC all tie the result's validity to the rabies vaccination staying current. A booster given after the vaccine expires does not revive the titer; it starts the sequence again. The simplest protection is a booster scheduled a month before the current shot's expiry, with the dates written on the plan.